CERT/CC Vulnerability Note VU#561275

Overview

OpenSSL is an open-source implementation of the Secure Sockets Layer (SSL) protocol. A remotely exploitable vulnerability exists in OpenSSL servers that could lead to the execution of arbitrary code on the system

Description

Servers running OpenSSL pre-release version 0.9.7 with Kerberos enabled, contain a remotely exploitable buffer overflow vulnerability. This vulnerability can be exploited by a malicious client sending a malformed key during the SSLv3 handshake process with the server.

Impact

A remote attacker may be able to execute arbitrary code on the server with the privileges of the exploited application or service.

Solution

OpenSSL Clients should apply the patches provided by your vendors, or upgrade to OpenSSL 0.9.6e. Note that applications statically linking to OpenSSL libraries may need to be recompiled with the corrected version of OpenSSL.

Vendor Information

561275

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Apple Computer Inc. Affected

Debian Affected

Gentoo Linux Affected

Updated: August 09, 2002

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

- -------------------------------------------------------------------- GENTOO LINUX SECURITY ANNOUNCEMENT - --------------------------------------------------------------------

PACKAGE :openssl SUMMARY :denial of service / remote root exploit DATE :2002-07-30 16:15:00
- --------------------------------------------------------------------
OVERVIEW
Multiple potentially remotely exploitable vulnerabilities has been found in OpenSSL.
DETAIL
1. The client master key in SSL2 could be oversized and overrun a buffer. This vulnerability was also independently discovered by consultants at Neohapsis (http://www.neohapsis.com/) who have also demonstrated that the vulerability is exploitable. Exploit code is NOT available at this time.
2. The session ID supplied to a client in SSL3 could be oversized and overrun a buffer.
3. The master key supplied to an SSL3 server could be oversized and overrun a stack-based buffer. This issues only affects OpenSSL 0.9.7 before 0.9.7-beta3 with Kerberos enabled.
4. Various buffers for ASCII representations of integers were too small on 64 bit platforms.
The full advisory can be read at http://www.openssl.org/news/secadv_20020730.txt
SOLUTION
It is recommended that all Gentoo Linux users update their systems as follows.
emerge --clean rsync emerge openssl emerge clean
After the installation of the updated OpenSSL you should restart the services that uses OpenSSL, which include such common services as OpenSSH, SSL-Enabled POP3, IMAP, and SMTP servers, and stunnel-wrapped services as well.
Also, if you have an application that is statically linked to openssl you will need to reemerge that application to build it against the new OpenSSL.
- -------------------------------------------------------------------- Daniel Ahlberg aliz@gentoo.org - --------------------------------------------------------------------

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Guardian Digital Affected

Notified: July 29, 2002 Updated: August 09, 2002

Status

Affected

Vendor Statement

See http://www.linuxsecurity.com/advisories/other_advisory-1338.html.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

+------------------------------------------------------------------------+ | EnGarde Secure Linux Security Advisory July 30, 2002 | | http://www.engardelinux.org/ ESA-20020730-019 | | | | Packages: openssl, openssl-misc | | Summary: several vulnerabilities in the openssl library. | +------------------------------------------------------------------------+
EnGarde Secure Linux is a secure distribution of Linux that features improved access control, host and network intrusion detection, Web based secure remote management, complete e-commerce using AllCommerce, and integrated open source security tools.
OVERVIEW - -------- There are several potentially exploitable vulnerabilities in the OpenSSL toolkit. A security review of OpenSSL is being done by A.L. Digital Ltd and The Bunker (http://www.thebunker.net/) under the DARPA program CHATS. Through this review, the following vulnerabilities were discovered:
1. The client master key in SSL2 could be oversized and overrun a buffer. This vulnerability was also independently discovered by consultants at Neohapsis (http://www.neohapsis.com/) who have also demonstrated that the vulnerability is exploitable.
2. The session ID supplied to a client in SSL3 could be oversized and overrun a buffer.
3. Various buffers for ASCII representations of integers were too small on 64 bit platforms.
4. The ASN1 parser can be confused by supplying it with certain invalid encodings.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2002-0656 to issues 1-2, CAN-2002-0655 to issue 3, and CAN-2002-0659 to issue 4.
SOLUTION - -------- Users of the EnGarde Professional edition can use the Guardian Digital Secure Network to update their systems automatically.
EnGarde Community users should upgrade to the most recent version as outlined in this advisory. Updates may be obtained from:
ftp://ftp.engardelinux.org/pub/engarde/stable/updates/ http://ftp.engardelinux.org/pub/engarde/stable/updates/
Before upgrading the package, the machine must either:
a) be booted into a "standard" kernel; or b) have LIDS disabled.
To disable LIDS, execute the command:
# /sbin/lidsadm -S -- -LIDS_GLOBAL
To install the updated package, execute the command:
# rpm -Uvh files
You must now update the LIDS configuration by executing the command:
# /usr/sbin/config_lids.pl
To re-enable LIDS (if it was disabled), execute the command:
# /sbin/lidsadm -S -- +LIDS_GLOBAL
To verify the signatures of the updated packages, execute the command:
# rpm -Kv files
UPDATED PACKAGES - ---------------- These updated packages are for EnGarde Secure Linux Community Edition.
Source Packages:
SRPMS/openssl-0.9.6-1.0.16.src.rpm MD5 Sum: 158ff68fb5474993694d1dd3f623b921
Binary Packages:
i386/openssl-0.9.6-1.0.16.i386.rpm MD5 Sum: 9f7bd4009f352a3a3a3519c97ebe988d
i386/openssl-misc-0.9.6-1.0.16.i386.rpm MD5 Sum: 281794e60d923df695f6bcf8aa17055b
i386/openssl-devel-0.9.6-1.0.16.i386.rpm MD5 Sum: 18b3ecd6b9d210180457caeb50a1331e
i686/openssl-0.9.6-1.0.16.i686.rpm MD5 Sum: 872eadde6cb52bcf93fae967c72949b1
i686/openssl-misc-0.9.6-1.0.16.i686.rpm MD5 Sum: 3baf870cbc35f3425cbd3110714ca3ed
i686/openssl-devel-0.9.6-1.0.16.i686.rpm MD5 Sum: 718f5a6c89fac22f338177134fd5e6bd
REFERENCES - ---------- Guardian Digital's public key: http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY
OpenSSL's Official Web Site: http://www.openssl.org/
Security Contact: security@guardiandigital.com EnGarde Advisories: http://www.engardelinux.org/advisories.html
- -------------------------------------------------------------------------- $I d : E S A - 20020730 - 019 - o p e n s s l, v 1.2 2002 / 07 / 3012 : 05 : 04 r w m E x p$ - -------------------------------------------------------------------------- Author: Ryan W. Maple <ryan@guardiandigital.com> Copyright 2002, Guardian Digital, Inc.
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Hewlett-Packard Company Affected

Notified: July 29, 2002 Updated: August 09, 2002

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

HP Support Information Digests

=============================================================================== o Security Bulletin Digest Split ------------------------------
The security bulletins digest has been split into multiple digests based on the operating system (HP-UX, MPE/iX, and HP Secure OS Software for Linux). You will continue to receive all security bulletin digests unless you choose to update your subscriptions.
To update your subscriptions, use your browser to access the IT Resource Center on the World Wide Web at:
http://www.itresourcecenter.hp.com/
Under the Maintenance and Support Menu, click on the "more..." link. Then use the 'login' link at the left side of the screen to login using your IT Resource Center User ID and Password.
Under the notifications section (near the bottom of the page), select Support Information Digests.
To subscribe or unsubscribe to a specific security bulletin digest, select or unselect the checkbox beside it. Then click the "Update Subscriptions" button at the bottom of the page.
o IT Resource Center World Wide Web Service ---------------------------------------------------
If you subscribed through the IT Resource Center and would like to be REMOVED from this mailing list, access the IT Resource Center on the World Wide Web at:
http://www.itresourcecenter.hp.com/
Login using your IT Resource Center User ID and Password. Then select Support Information Digests (located under Maintenance and Support). You may then unsubscribe from the appropriate digest. ===============================================================================

Digest Name: daily HP Secure OS Software for Linux security bulletins digest Created: Wed Aug 7 3:00:03 PDT 2002
Table of Contents:
Document ID Title --------------- ----------- HPSBTL0207-055 Security vulnerability in openssl (ref. 1)
The documents are listed below. -------------------------------------------------------------------------------

Document ID: HPSBTL0207-055 Date Loaded: 20020730 Title: Security vulnerability in openssl (ref. 1)
TEXT

--------------------------------------------------------------- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBTL0207-055 Originally issued: 30 July '02 ** Rev. 1 ** 06 August '02 ---------------------------------------------------------------
The information in the following Security Bulletin should be acted upon as soon as possible. Hewlett-Packard Company will not be liable for any consequences to any customer resulting from the customer's failure to fully implement instructions in this Security Bulletin as soon as possible.
Because the vulnerability does not require a HP Secure OS 1.0 patch or re-packaging of the RPM affected by the bulletin, the RPMs have not been produced or tested by Hewlett-Packard Company.
--------------------------------------------------------------- PROBLEM: Updated OpenSSL packages fix several vulnerabilities
PLATFORM: Any system running HP Secure OS Software for Linux Release 1.0
DAMAGE: Potential for remotely exploitable buffer overflow
SOLUTION: Apply the appropriate RPMs (see section B below)
MANUAL ACTIONS: None
AVAILABILITY: The RPMs are available now.
CHANGE SUMMARY: Rev. 1 Updated OpenSSL packages are available (RHSA-2002:160) --------------------------------------------------------------- A. Background
OpenSSL is a commercial-grade, full-featured, and Open Source toolkit which implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. A security audit of the OpenSSL code sponsored by DARPA found several buffer overflows in OpenSSL which affect versions 0.9.7 and 0.9.6d and earlier.
** Rev. 1 ** >>> Additional OpenSSL security vulnerabilities were found, corrected and updated in the RPM packages previously made available under Red Hat Security Advisory number RHSA-2002:155.

B. Fixing the problem
Hewlett-Packard Company recommends that customers install the RPMs listed in the following Red Hat Security Advisory in the section labeled "Red Hat Linux 7.1 i386".
** Rev. 1 ** >>> 2002-08-05 RHSA-2002:160 Updated openssl packages fix protocol parsing bugs
>>> http://rhn.redhat.com/errata/RHSA-2002-160.html
To install the security bulletin RPMs, use the following sequence of commands:
1. If you use the tripwire product, we recommend that you run a a consistency check and fix any violations before installing the security bulletin RPM.
tripwire --check --interactive
2. Install the bulletin RPM from the root account.
rpm -F <bulletin RPM name>
3. Update the tripwire database
tripwire --check --interactive
NOTE: The rpm -q <package name> command can be used to determine if the package is installed. Hewlett-Packard Company recommends applying the Security Bulletin fixes to installed packages only. The -F option to the RPM installer will only apply the fix if the package is currently installed on the system. Dependent RPMs can be found by using the "Find Latest RPMs" search facility at http://www.redhat.com/apps/download. To find the latest dependent RPM enter the RPM's name in the "By Keyword" box.

C. To subscribe to automatically receive future HP Security Bulletins from the HP IT Resource Center via electronic mail, do the following:
Use your browser to access the HP IT Resource Center page at:
http://itrc.hp.com
Use the 'Login' tab at the left side of the screen to login using your ID and password. Use your existing login or the "Register" button at the left to create a login. Remember to save the User ID assigned to you, and your password. This login provides access to many useful areas of the ITRC.
In the left most frame select "Maintenance and Support".
Under the "Notifications" section (near the bottom of the page), select "Support Information Digests".
To -subscribe- to future HP Security Bulletins or other Technical Digests, click the check box (in the left column) for the appropriate digest and then click the "Update Subscriptions" button at the bottom of the page.
or
To -review- bulletins already released, select the link (in the middle column) for the appropriate digest.

D. To report new security vulnerabilities, send email to
security-alert@hp.com
Please encrypt any exploit information using the security-alert PGP key, available from your local key server. You may also get the security-alert PGP key by sending a message with a -subject- (not body) of 'get key' (no quotes) to security-alert@hp.com.
Permission is granted for copying and circulating this bulletin to Hewlett-Packard Company (HP) customers (or the Internet community) for the purpose of alerting them to problems, if and only if, the bulletin is not edited or changed in any way, is attributed to HP, and provided such reproduction and/or distribution is performed for non-commercial purposes.
Any other use of this information is prohibited. HP is not liable for any misuse of this information by any third party. --------------------------------------------------------------- -----End of Document ID: HPSBTL0207-055--------------------------------------

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IBM Affected

Juniper Networks Affected

MandrakeSoft Affected

NetBSD Affected

Notified: July 29, 2002 Updated: September 23, 2002

Status

Affected

Vendor Statement

Please see ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2002-009.txt.asc

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

-----BEGIN PGP SIGNED MESSAGE-----

NetBSD Security Advisory 2002-009 ================================= (updated 2002/9/22)
Topic:Multiple vulnerabilities in OpenSSL code
Version:NetBSD-current: source prior to August 10, 2002 NetBSD-1.6 beta: affected NetBSD-1.5.3: affected NetBSD-1.5.2: affected NetBSD-1.5.1: affected NetBSD-1.5: affected NetBSD-1.4.*: not applicable pkgsrc: prior to openssl-0.9.6f
Severity:Potential for remote root exploit
Fixed:NetBSD-current:August 10, 2002 NetBSD-1.6 branch:August 11, 2002 (1.6 includes the fix) NetBSD-1.5 branch:August 31, 2002 pkgsrc:openssl-0.9.6f (or later)
NOTE: previous advisory had fixed dates prior to August 10. There were errors found in the vendor-supplied fix, therefore the fixed dates were modified. Sorry for the confusion and thanks for the patience.
NOTE: previous revision of advisory suggested that 1.5 branch was fixed on August 1, however the fix was found to be insufficient. Therefore, users of 1.5 should apply the fix presented in this revised advisory. Sorry for the confusion and thanks for the patience.
NOTE: previous revision of advisory suggested that 1.5 branch can be fixed by rebuilding part of the source code tree (shared library). However, it was incorrect. Follow the instruction below and perform a full build. Sorry for the confusion and thanks for the patience.

Abstract ========
There are multiple vulnerabilities found in openssl 0.9.6e and prior releases. There are four remotely-exploitable buffer overruns in SSL2/3 code. The ASN1 parser can be confused by invalid encodings (SSL/TLS code affected).
None of these services are enabled by default in NetBSD, however, by enabling services built with these libraries, a system would become vulnerable.
- From the OpenSSL advisory:
"Everyone using OpenSSL 0.9.6d or earlier, or 0.9.7-beta2 or earlier or current development snapshots of 0.9.7 to provide SSL or TLS is vulnerable, whether client or server. 0.9.6d servers on 32-bit systems with SSL 2.0 disabled are not vulnerable."
After the above advisory was published, - 0.9.6e was found to be vulnerable, and 0.9.6f was released. - 0.9.6f had some build framework errors, and 0.9.6g was released.
The NetBSD fix includes OpenSSL 0.9.6g.

Technical Details =================
http://www.openssl.org/news/secadv_20020730.txthttp://CERT.Uni-Stuttgart.DE/advisories/c-integer-overflow.php

Solutions and Workarounds =========================
The recent NetBSD 1.6 release is not vulnerable to this issue. A full upgrade to NetBSD 1.6 is the recommended resolution for all users able to do so. Many security-related improvements have been made, and indeed this release has been delayed several times in order to include fixes for a number of recent issues.
The following instructions describe how to upgrade your libcrypto/libssl binaries by updating your source tree and rebuilding and installing a new version of libcrypto/libssl.
Be sure to restart running instances of programs that use crypto libraries (like sshd) after upgrading shared libraries.
If you have any statically-linked binaries that linked against a vulnerable libcrypto and/or libssl, you need to recompile them.

* NetBSD-current:
Systems running NetBSD-current dated from before 2002-08-10 should be upgraded to NetBSD-current dated 2002-08-10 or later.
The following directories need to be updated from the netbsd-current CVS branch (aka HEAD): crypto/Makefile.openssl crypto/dist/openssl lib/libcrypto lib/libssl
To update from CVS, re-build, and re-install libcrypto and libssl: # cd src # cvs update -d -P crypto/Makefile.openssl crypto/dist/openssl \ lib/libcrypto lib/libssl
# make includes # cd lib/libcrypto # make cleandir dependall # make install # cd ../../lib/libssl # make cleandir dependall # make install

* NetBSD 1.6 beta:
Systems running NetBSD 1.6 BETAs and Release Candidates should be upgraded to the NetBSD 1.6 release.
If a source-based point upgrade is required, sources from the NetBSD 1.6 branch dated 2002-08-11 or later should be used.
The following directories need to be updated from the netbsd-1-6 CVS branch: crypto/Makefile.openssl crypto/dist/openssl lib/libcrypto lib/libssl
To update from CVS, re-build, and re-install libcrypto and libssl: # cd src # cvs update -d -P -r netbsd-1-6 crypto/Makefile.openssl \ crypto/dist/openssl lib/libcrypto lib/libssl
# make includes # cd lib/libcrypto # make cleandir dependall # make install # cd ../../lib/libssl # make cleandir dependall # make install

* NetBSD 1.5, 1.5.1, 1.5.2, 1.5.3:
Systems running NetBSD-1.5.x dated from before 2002-08-31 should be upgraded to NetBSD-1.5 branch dated 2002-08-31 or later.
The following directories need to be updated from the netbsd-1-5 CVS branch. Due to the shlib major bump in libcrypto/libssl large number of shared libraries has to be rebuilt: crypto/Makefile.openssl crypto/dist/openssl lib/libasn1 lib/libcom_err lib/libcrypto lib/libgssapi lib/libhdb lib/libkadm lib/libkadm5clnt lib/libkadm5srv lib/libkafs lib/libkdb lib/libkrb lib/libkrb5 lib/libkstream lib/libroken lib/libsl lib/libss lib/libtelnet usr.bin/openssl
All userland tools that use openssl needs to be rebuilt, due to the shlib major bump. Therefore, full rebuild is suggested. Make sure to rebuild all binaries installed by pkgsrc as well.
To update from CVS, re-build, and re-install libcrypto and libssl: # cd src # cvs update -d -P -r netbsd-1-5 <directories listed above>
# make build

* NetBSD 1.4, 1.4.1, 1.4.2, 1.4.3:
OpenSSL was not included in the base system in NetBSD-1.4.* Follow the directions for pkgsrc if you have installed it from pkgsrc.

* pkgsrc:
openssl (pkgsrc/security/openssl) prior to 0.9.6f are vulnerable. Upgrade to openssl-0.9.6f or later; pkgsrc currently contains 0.9.6g at time of this writing.
Packages which require openssl can be found by running 'pkg_info openssl'. Depending on the method you choose to update pkgsrc packages, a rebuild of the packages on that list may be performed for you by the package system. If you update using the experimental 'make replace' target, you will need to manually update any packages which build static binaries with libssl.a and libcrypto.a
If you have statically linked binaries in pkgsrc, they have to be rebuilt. Statically linked binaries can be identified by the following command (note: be sure to include the directory you install pkgsrc binaries to, if you've changed LOCALBASE from the default of /usr/pkg)
file /usr/pkg/{bin,sbin,libexec} | grep static

Thanks To =========
A.L. Digital Ltd and John McDonald of Neohapsis. Adi Stav and James Yonan. CERT and the OpenSSL team.
Jun-ichiro itojun Hagino for maintenance of OpenSSL in the NetBSD source tree, and preparing the initial advisory text.
The NetBSD Release Engineering teams, for great patience and assistance in dealing with repeated security issues discovered recently.

Revision History ================
2002-08-01Initial release based on 0.9.6e 2002-08-11based on 0.9.6f 2002-08-311.5 pullup done, 0.9.6g 2002-09-16Re-release with updated information

More Information ================
An up-to-date PGP signed copy of this release will be maintained at ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2002-009.txt.asc
Information about NetBSD and NetBSD security can be found athttp://www.NetBSD.ORG/ and http://www.NetBSD.ORG/Security/.

Copyright 2002, The NetBSD Foundation, Inc. All Rights Reserved.
$N e t B S D : N e t B S D - S A 2002 - 009. t x t, v 1.39 2002 / 09 / 2301 : 57 : 19 i t o j u n E x p$

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OpenLDAP Affected

OpenPKG Affected

Updated: August 09, 2002

Status

Affected

Vendor Statement

See http://www.openpkg.org/security/OpenPKG-SA-2002.008-openssl.html.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

________________________________________________________________________
OpenPKG Security Advisory The OpenPKG Project http://www.openpkg.org/security.html http://www.openpkg.org openpkg-security@openpkg.org openpkg@openpkg.org OpenPKG-SA-2002.008 30-Jul-2002 ________________________________________________________________________
Package: openssl Vulnerability: denial of service / remote root exploit OpenPKG Specific: no
Affected Releases: OpenPKG 1.0 OpenPKG CURRENT Affected Packages: <= openssl-0.9.6b-1.0.0 <= openssl-0.9.6d Corrected Packages: >= openssl-0.9.6b-1.0.1 >= openssl-0.9.6e Dependent Packages: apache apache curl bind fetchmail cadaver imapd cpu inn curl links dsniff lynx exim mutt fetchmail openldap imapd openssh inn perl-ssl links postfix lynx postgresql mutt qpopper neon samba openldap sasl openssh scanssh openvpn sendmail perl-ssl siege postfix sitecopy postgresql snmp qpopper stunnel rdesktop tcpdump samba w3m sasl scanssh sendmail siege sitecopy snmp stunnel sysmon tcpdump w3m
Description: According to an official security advisory from the OpenSSL team, there are four remotely exploitable buffer overflows that affect various OpenSSL client and server implementations [5]. There are also parsing problems in the ASN.1 library used by OpenSSL. The Common Vulnerabilities and Exposures (CVE) project assigned the ids CAN-2002-0655 [6], CAN-2002-0656 [7], CAN-2002-0657 [8] and CAN-2002-0659 [9] to the problems. Several of these vulnerabilities could be used by a remote attacker to execute arbitrary code on the target system. All could be used to create a denial of service.
Please check whether you are affected by running "<prefix>/bin/rpm -q openssl". If you have the "openssl" package installed and its version is affected (see above), we recommend that you immediately upgrade it (see Solution). Additionally, you have to rebuild and reinstall all dependent OpenPKG packages, too. [2]
Solution: Select the updated source RPM appropriate for your OpenPKG release [4], fetch it from the OpenPKG FTP service [3] or a mirror location, verify its integrity [1], build a corresponding binary RPM from it and update your OpenPKG installation by applying the binary RPM [2]. For the latest OpenPKG 1.0 release, perform the following operations to permanently fix the security problem (for other releases adjust accordingly).
$f t p f t p . o p e n p k g . o r g f t p > b i n f t p > c d r e l e a s e / 1.0 / U P D f t p > g e t o p e n s s l - 0.9 .6 b - 1.0 .1 . s r c . r p m f t p > b y e$ <prefix>/bin/rpm --checksig openssl-0.9.6b-1.0.1.src.rpm $< p r e f i x > / b i n / r p m - - r e b u i l d o p e n s s l - 0.9 .6 b - 1.0 .1 . s r c . r p m$ su - # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/openssl-0.9.6b-1.0.1.*.rpm
Now proceed and rebuild and reinstall all dependent OpenPKG packages, too (see list above). ________________________________________________________________________
References: [1] http://www.openpkg.org/security.html#signature [2] http://www.openpkg.org/tutorial.html#regular-source [3] ftp://ftp.openpkg.org/release/1.0/UPD/ [4] ftp://ftp.openpkg.org/release/1.0/UPD/openssl-0.9.6b-1.0.1.src.rpm [5] http://www.openssl.org/news/secadv_20020730.txt [6] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0655 [7] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0656 [8] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0657 [9] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0659 ________________________________________________________________________
For security reasons, this advisory was digitally signed with the OpenPGP public key "OpenPKG <openpkg@openpkg.org>" (ID 63C4CB9F) of the OpenPKG project which you can find under the official URL http://www.openpkg.org/openpkg.pgp or on http://keyserver.pgp.com/. To check the integrity of this advisory, verify its digital signature by using GnuPG (http://www.gnupg.org/). For instance, pipe this message to the command "gpg --verify --keyserver keyserver.pgp.com". ________________________________________________________________________
-----BEGIN PGP SIGNATURE----- Comment: OpenPKG <openpkg@openpkg.org>
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OpenSSL Affected

Oracle Affected

Notified: July 29, 2002 Updated: August 09, 2002

Status

Affected

Vendor Statement

Please see http://otn.oracle.com/deploy/security/htdocs/opensslAlert.html

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Oracle Security Alert #37
Dated: 1 August, 2002
Updated: 5 August, 2002

OpenSSL Security Vulnerability

Products affected:

Oracle HTTP Server (OHS) shipped with the database up to and
including version 9.2.0.
Oracle9iAS versions earlier than 9.0.2, including all versions
1.0.2.x.
CorporateTime Outlook Connector (CTOC), versions 3.1, 3.1.1,
3.1.2, and 3.3 on Windows 98, NT, 2K, XP.

Description:

There are remotely exploitable buffer overflow vulnerabilities in
OpenSSL versions prior to 0.9.6e.
These vulnerabilities may allow a remote attacker to execute
arbitrary code or perform a denial-of-service (DoS) attack.

These problems are described in the OpenSSL Security Advisory [30
July 2002]:

[25]http://www.openssl.org/news/secadv_20020730.txt

These problems are also described in CERT Advisory CA-2002-23:

[26]http://www.cert.org/advisories/CA-2002-23.html

Workarounds:

There are no workarounds against the potential denial-of-service
attack. Disabling SSL should prevent remote execution of code.

Users of Corporate Time Outlook Connector can disable TLS by adding
the following section to the CTOC.INI file:
[CTOC]
allow-tls=FALSE

NOTE:

Disabling SSL or TLS will result in data being transmitted in the
clear (i.e. unencrypted), including passwords when using Basic
Authentication.

Patch Information:

Patches will be made available on MetaLink for Patch 2492925 as
scheduled in the following table:
Product Download Release Solaris NT HPUX Linux AIX TRU64
iAS 1022 OHS .3.19 08/09/02 08/09/02 08/15/02 08/15/02 08/15/02
08/15/02
iAS 1021 OHS 1.3.12 08/08/02 08/08/02 08/09/02 08/09/02 08/09/02
08/09/02
iAS 1021s OHS 1.0.2.1s 08/08/02 08/08/02 08/12/02 08/12/02 08/12/02
08/12/02
iAS 102 iAS 1.0.2 08/09/02 08/09/02 08/14/02 08/14/02 08/14/02
08/14/02
RDBMS 9.2 Oracle 9.2.0.0 08/08/02 08/08/02 08/08/02 08/08/02
08/08/02 08/08/02
RDBMS 901 Oracle 9.0.1.0 08/09/02 08/09/02 08/13/02 08/13/02
08/13/02 08/13/02
RDBMS 817 Oracle 8.1.7.0 08/09/02 08/09/02 08/16/02 08/16/02
08/16/02 08/16/02

Upgrade Information:

New releases of the Corporate Time Outlook Connector will address
this vulnerability.
The following releases are scheduled to be released around 16
August, 2002:
1. CorporateTime Outlook Connector 3.3.1
2. Oracle Outlook Connector 3.4

Copyright © 2002, Oracle Corporation. All rights reserved.
[27]Contact Us | [28]Legal Notices and Terms of Use | [29]Privacy
Statement

References

25. http://www.openssl.org/news/secadv_20020730.txt
26. http://www.cert.org/advisories/CA-2002-23.html
27. http://otn.oracle.com/contact
28. http://www.oracle.com/html/index.html?copyright.html
29. http://www.oracle.com/html/index.html?privacy.html

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Red Hat Inc. Affected

Secure Computing Corporation Affected

SuSE Affected

Updated: September 23, 2002

Status

Affected

Vendor Statement

-----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________
SuSE Security Announcement
Package: openssl/Slapper worm Announcement-ID: SuSE-SA:2002:033 Date: Thu Sep 19 2002 Affected products: 7.0, 7.1, 7.2, 7.3, 8.0 SuSE Linux Database Server, SuSE eMail Server III, SuSE eMail Server 3.1, SuSE Linux Enterprise Server, SuSE Linux Firewall on CD, SuSE Linux Enterprise Server 7 SuSE Linux Office Server Vulnerability Type: buffer overflow Severity (1-10): 9 SuSE default package: yes Cross References:CVE CAN-2002-0655, CAN-2002-0656, CAN-2002-0659, SuSE-SA:2002:027
Content of this advisory: 1) vulnerabilities in openssl libraries; Slapper worm 2) pending vulnerabilities, solutions, workarounds 3) standard appendix (further information)
______________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
This advisory is issued in an attempt to clarify any issues surrounding the recently discovered Apache/mod_ssl worm.
On July 30, we released a security advisory concerning vulnerabilities in OpenSSL, including a buffer overflow in the SSL code. This vulnerability (CVE CAN-2002-0656, also discussed in CERT Advisory http://www.cert.org/advisories/CA-2002-23.html) is currently being exploited by a worm called Slapper, propagating through Apache's mod_ssl module.
It is worth noting that even though the worm infects Apache through mod_ssl, this is not a vulnerability in mod_ssl or Apache, but in the OpenSSL library used by mod_ssl.
This also means that Apache may not be the only service vulnerable to an attack via the SSL bug. Similar exploits may be possible against cyrus-imapd, sendmail with TLS support, or sslwrap-enabled services.
As a workaround, it is also possible to disable SSLv2 in mod_ssl (as described in our previous advisory SuSE-SA:2002:027; http://www.suse.com/de/security/2002_027_openssl.html), but you should be aware that this does not protect other SSL based servers that may be running on your machine.

We have received numerous inquiries from SuSE users on whether the update packages provided by SuSE as part of SA:2002:027 fix this bug even though they do not contain the latest OpenSSL version recommended in various advisories.
To clarify this, we would like to state that these packages DO FIX the bug exploited by the Slapper worm. Following established policy, we did this by applying a source code patch instead of upgrading to a newer version, because the latter usually causes serious problems for many users (in particular, different versions of OpenSSL libraries are not always API compatible).

However, it turns out that a number of packages were statically linked against OpenSSL libraries:
mod_ssl (SuSE Linux 7.0): We have released rebuilt mod_ssl packages linked against the most recent OpenSSL libraries.
If you run mod_ssl on SuSE Linux 7.0, you must upgrade mod_ssl, too.
sendmail-tls (SuSE Linux 7.1, 7.2, 7.3): Sendmail-tls, the SSL enabled version of sendmail, was linked statically against OpenSSL on SuSE 7.1, 7.2 and 7.3. The security impact of this problem is probably the same as with Apache and mod_ssl.
We are releasing rebuilt packages linked against the most OpenSSL libraries.
Sendmail-tls is not part of the default installation profile.
If you are using sendmail-tls, we strongly recommend you upgrade to the latest packages provided on our FTP servers.
openssh (SuSE Linux 7.1, 7.2 and 7.3): Ssh and sshd do not use any SSL functionality, and thus are not susceptible to the type of attack carried out by the Slapper worm.
To date, we are not aware of any way to exploit them. We nevertheless recommend to upgrade to the latest versions provided on our FTP site.
freeswan (SuSE Linux 7.1, 7.2): FreeSWAN includes a utility named fswcert for creating and manipulating X.509 certificates, which is also linked statically against libcrypto.
To date, we are not aware of any way to exploit them. We nevertheless recommend to upgrade to the latest versions provided on our FTP site as soon as they become available (2002 Sep 20).
______________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
mod_php4: we are preparing an update of mod_php4 addressing various vulnerabilities that have been published recently.
______________________________________________________________________________
3) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SuSE update packages are available on many mirror ftp servers all over the world. While this service is being considered valuable and important to the free and open source software community, many users wish to be sure about the origin of the package and its content before installing the package. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package.
1) execute the command md5sum <name-of-the-file.rpm> after you downloaded the file from a SuSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security@suse.de), the checksums show proof of the authenticity of the package. We disrecommend to subscribe to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless.
2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an uninstalled rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SuSE in rpm packages for SuSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SuSE Linux distributions version 7.1 and thereafter install the key "build@suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the toplevel directory of the first CD (pubring.gpg) and atftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .

- SuSE runs two security mailing lists to which any interested party may subscribe:
suse-security@suse.com - general/linux/SuSE security discussion. All SuSE security announcements are sent to this list. To subscribe, send an email to <suse-security-subscribe@suse.com>.
suse-security-announce@suse.com - SuSE's announce-only mailing list. Only SuSE's security annoucements are sent to this list. To subscribe, send an email to <suse-security-announce-subscribe@suse.com>.
For general information or the frequently asked questions (faq) send mail to: <suse-security-info@suse.com> or <suse-security-faq@suse.com> respectively.
===================================================================== SuSE's security contact is <security@suse.com> or <security@suse.de>. The <security@suse.de> public key is listed below. ===================================================================== ______________________________________________________________________________
The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the cleartext signature shows proof of the authenticity of the text. SuSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory.
Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de> pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>
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Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Trustix Affected

Updated: August 09, 2002

Status

Affected

Vendor Statement

See http://www.trustix.net/errata/misc/2002/TSL-2002-0063-openssl.asc.txt, and "Addition to Trustix Secure Linux Bugfix Advisory #2002-0063" below.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

- -------------------------------------------------------------------------- Trustix Secure Linux Security Advisory #2002-0063
Package name: openssl Summary: Multiple security problems Date: 2002-07-29 Affected versions: TSL 1.1, 1.2, 1.5
- --------------------------------------------------------------------------
Problem description: Several severe security problems have been found in the openssl source code which upon the TSL openssl packages are based. Most of these vulnerabilities have a potential for remote expoitation, even though no exploits are currently released. The upstream development group have provided us with patches that fixes the problems.
These issues have been asigned the following CVE names: CAN-2002-0655, CAN-2002-0656, and CAN-2002-0659.
More information: <URI: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0655> <URI: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0656> <URI: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0659>
Action: We recommend that all systems with this package installed are upgraded. Please note that if you do not need the functionality provided by this package, you may want to remove it from your system.

Location: All TSL updates are available from <URI:http://www.trustix.net/pub/Trustix/updates/> <URI:ftp://ftp.trustix.net/pub/Trustix/updates/>

Automatic updates: Users of the SWUP tool can enjoy having updates automatically installed using 'swup --upgrade'.
Get SWUP from: <URI:ftp://ftp.trustix.net/pub/Trustix/software/swup/>

Public testing: These packages have been available for public testing for some time. If you want to contribute by testing the various packages in the testing tree, please feel free to share your findings on the tsl-discuss mailinglist. The testing tree is located at <URI:http://www.trustix.net/pub/Trustix/testing/> <URI:ftp://ftp.trustix.net/pub/Trustix/testing/>

Questions? Check out our mailing lists: <URI:http://www.trustix.net/support/>

Verification: This advisory along with all TSL packages are signed with the TSL sign key. This key is available from: <URI:http://www.trustix.net/TSL-GPG-KEY>
The advisory itself is available from the errata pages at <URI:http://www.trustix.net/errata/trustix-1.2/> and <URI:http://www.trustix.net/errata/trustix-1.5/> or directly at <URI:http://www.trustix.net/errata/misc/2002/TSL-2002-0063-openssl.asc.txt>

MD5sums of the packages: - -------------------------------------------------------------------------- 0c51861ce4432c3f669657e2c4971c6f ./1.5/SRPMS/openssl-0.9.6-10tr.src.rpm eb8a64dba138584b8085aec8d9ccaf0c ./1.5/RPMS/openssl-support-0.9.6-10tr.i586.rpm 9db293f035fbd82a3482ab87d3465eb2 ./1.5/RPMS/openssl-python-0.9.6-10tr.i586.rpm 582d08bb63676a33da1aa89a33a05914 ./1.5/RPMS/openssl-devel-0.9.6-10tr.i586.rpm 2d05569684b868cbacca9e389ded3f0f ./1.5/RPMS/openssl-0.9.6-10tr.i586.rpm 96053f774317702af40705697a2460d4 ./1.2/SRPMS/openssl-0.9.6-3tr.src.rpm 84b50e02167b61a9d3093bcc055c7b45 ./1.2/RPMS/openssl-devel-0.9.6-3tr.i586.rpm b0c3b99917e1c69f593a74b9989a33f9 ./1.2/RPMS/openssl-0.9.6-3tr.i586.rpm 96053f774317702af40705697a2460d4 ./1.1/SRPMS/openssl-0.9.6-3tr.src.rpm 111d6f3e42c2410a11ac4704036a31ef ./1.1/RPMS/openssl-devel-0.9.6-3tr.i586.rpm 23d4bef487e86dfff1854f3f3c6fd867 ./1.1/RPMS/openssl-0.9.6-3tr.i586.rpm - --------------------------------------------------------------------------

Trustix Security Team

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iD8DBQE9RSsqwRTcg4BxxS0RAgv0AJsGLRMNaZ2pmZdE4NRQCLgfRpNLygCdHfkE 3bFFVLoH4NXOBs+mT/i8T4E= =Ydxh -----END PGP SIGNATURE-----
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
- -------------------------------------------------------------------------- Addition to Trustix Secure Linux Bugfix Advisory #2002-0063
Package name: openssl Summary: Restart services Date: 2002-08-01 Affected versions: TSL 1.1, 1.2, 1.5
- --------------------------------------------------------------------------
Problem description: I really hope all of you have updated the openssl package. :)
Most of you know this already, and I'm sorry I didn't include this in the openssl advisory earlier this week. But here it goes:
Since openssl is a shared library, all services linked against this library must be restarted for the changes to take affect.
The list of services is long and includes (but are not limited to):
httpd (mod_php4 is linked against libssl) httpsd simap pop3s postfix postgresql smb (maybe also winbind) sshd

Action: We recommend that all services that are linked against openssl are restarted.

Get SWUP from: <URI:ftp://ftp.trustix.net/pub/Trustix/software/swup/>
Questions? Check out our mailing lists: <URI:http://www.trustix.net/support/>
Verification: This advisory along with all TSL packages are signed with the TSL sign key. This key is available from: <URI:http://www.trustix.net/TSL-GPG-KEY>

Trustix Security Team
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iD8DBQE9SQ9hwRTcg4BxxS0RAvABAJ4jrAH8CyFLWpcGguZElQgdL88tmgCfXv2Z AorvR78koxCwr7qGSPbZX+A= =WAGZ -----END PGP SIGNATURE-----

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Lotus Development Corporation Not Affected

Microsoft Corporation Not Affected

Apache Unknown

Apache-SSL Unknown

Covalent Unknown

NCSA Unknown

View all 23 vendors View less vendors

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

Acknowledgements

Thanks to A.L. Digital Ltd for discovering and reporting on this vulnerability.

This document was written by Jason A Rafail.

Other Information

CVE IDs:	CVE-2002-0657
CERT Advisory:	CA-2002-23
Severity Metric:	5.88
Date Public:	2002-07-30
Date First Published:	2002-07-30
Date Last Updated:	2002-09-30 20:51 UTC
Document Revision:	28

Software Engineering Institute

CERT Coordination Center

OpenSSL servers contain a remotely exploitable buffer overflow vulnerability during the SSL3 handshake process

Vulnerability Note VU#561275

Overview

Description

Impact

Solution

Vendor Information

Apple Computer Inc. Affected

Debian Affected

Gentoo Linux Affected

Guardian Digital Affected

Hewlett-Packard Company Affected

IBM Affected

Juniper Networks Affected

MandrakeSoft Affected

NetBSD Affected

OpenLDAP Affected

OpenPKG Affected

OpenSSL Affected

Oracle Affected

Red Hat Inc. Affected

Secure Computing Corporation Affected

SuSE Affected

Trustix Affected

Lotus Development Corporation Not Affected

Microsoft Corporation Not Affected

Apache Unknown

Apache-SSL Unknown

Covalent Unknown

NCSA Unknown

CVSS Metrics

References

Acknowledgements

Other Information

Contact CERT/CC