CERT/CC Vulnerability Note VU#368819

Overview

There is a bug in the zlib compression library that may manifest itself as a vulnerability in programs that are linked with zlib. This may allow an attacker to conduct a denial-of-service attack, gather information, or execute arbitrary code.

It is important to note that the CERT/CC has not received any reports of exploitation of this bug. Based on the information available to us at this time, it is difficult to determine whether this bug can be successfully exploited. However, given the widespread deployment of zlib, we have published this document as a proactive measure.

Description

There is a bug in the decompression algorithm used by the popular zlib compression library. If an attacker is able to pass a specially-crafted block of invalid compressed data to a program that includes zlib, the program's attempt to decompress the crafted data can cause the zlib routines to corrupt the internal data structures maintained by malloc.

The bug results from a programming error that causes segments of dynamically allocated memory to be released more than once (i.e., "double-freed"). Specifically, when inftrees.c:huft_build() encounters the crafted data, it returns an unexpected Z_MEM_ERROR to inftrees.c:inflate_trees_dynamic(). When a subsequent call is made to infblock.c:inflate_blocks(), the inflate_blocks function tries to free an internal data structure a second time.

Because this bug interferes with the proper allocation and deallocation of dynamic memory, it may be possible for an attacker to influence the operation of programs that include zlib. In most circumstances, this influence will be limited to denial of service or information leakage, but it is theoretically possible for an attacker to insert arbitrary code into a running program. This code would be executed with the permissions of the vulnerable program.

Impact

This bug may introduce vulnerabilities into any program that includes the affected library. Depending upon how and where the zlib routines are called from the given program, the resulting vulnerability may have one or more of the following impacts: denial of service, information leakage, or execution of arbitrary code.

Solution

Upgrade your version of zlib

The maintainers of zlib have released version 1.1.4 to address this vulnerability. Any software that is linked to or derived from an earlier version of zlib should be upgraded immediately. The latest version of zlib is available at http://www.zlib.org.

These are the MD5 checksums for zlib version 1.1.4:

abc405d0bdd3ee22782d7aa20e440f08 zlib-1.1.4.tar.gz
9bf1d36ced334b0cf1f996f5c8171018 zlib114.zip

The maintainers of zlib have published an advisory regarding this issue; for further information, please see

http://www.gzip.org/zlib/advisory-2002-03-11.txt

Apply a patch from your vendor

The zlib compression library is freely available and used by many vendors in a wide variety of applications. Any one of these applications may contain vulnerabilities that are introduced by this vulnerability. For the most recent information available to the CERT/CC, please see the vendor section of this document.

Vendor Information

368819

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Cisco Systems Inc. Affected

Compaq Computer Corporation Affected

Notified: February 23, 2002 Updated: October 17, 2002

Status

Affected

Vendor Statement

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

SECURITY BULLETIN
REVISION: 1
SSRT0818U HP Tru64 UNIX V5.1A zlib Potential Security Vulnerability
NOTICE: There are no restrictions for distribution of this Bulletin provided that it remains complete and intact.
RELEASE DATE: October 2002
SEVERITY: High
SOURCE: Compaq Computer Corporation, a wholly-owned subsidiary of Hewlett-Packard Company and Hewlett-Packard Company HP Services Software Security Response Team
REFERENCE: CERT CA-2002-07
PROBLEM SUMMARY

This bulletin will be posted to the support website within 24 hours of release tohttp://thenew.hp.com/country/us/eng/support.html Use the SEARCH IN feature box, enter SSRT0818U in the search window.

SSRT0818U zlib (Severity - High)
A potential security vulnerability has been discovered, where under certain circumstances, system integrity may be compromised. This may be in the form of improper file or privilege management. Compaq has corrected this potential vulnerability.

VERSIONS IMPACTED:
HP Tru64 UNIX 5.1A only

NOT IMPACTED:
HP-UX
HP Tru64 UNIX V5.1, V5.0A, V4.0G, V4.0F
HP NonStop Servers
HP OpenVMS

RESOLUTION

The HP Tru64 UNIX fix is available in the mainstream release patch kit for HP Tru64 UNIX V5.1A PK3 (BL3).
HP Tru64 UNIX 5.1A
Kit Name: t64v51ab03as0003-20020827.tar
Kit Location: ftp://ftp1.support.compaq.com/public/unix/v5.1a/
Information on how to verify MD5 and SHA1 checksums is available at:http://www.support.compaq.com/patches/whats-new.shtml

After completing the update, HP and Compaq strongly recommend that you perform an immediate backup of the system disk so that any subsequent restore operations begin with updated software. Otherwise, the updated must be re-applied after a future restore operation. Also, if at some future time the system is upgraded to a later patch release or version release, reinstall the appropriate ERP.

SUPPORT: For further information, contact HP Services.
SUBSCRIBE: To subscribe to automatically receive future Security Advisories from the Software Security Response Team via electronic mail:http://www.support.compaq.com/patches/mailing-list.shtml
REPORT: To report a potential security vulnerability with any HP or Compaq supported product, send email to: security-alert@hp.com

HP and Compaq appreciate your cooperation and patience. As always, HP and Compaq urge you to periodically review your system management and security procedures. HP and Compaq will continue to review and enhance the security features of its products and work with our customers to maintain and improve the security and integrity of their systems.
"HP and Compaq are broadly distributing this Security Bulletin in order to bring to the attention of users of the affected Compaq products the important security information contained in this Bulletin. HP and Compaq recommend that all users determine the applicability of this information to their individual situations and take appropriate action. Neither HP nor Compaq warrant that this information is necessarily accurate or complete for all user situations and, consequently, neither HP nor Compaq will be responsible for any damages resulting from user's use or disregard of the information provided in this Bulletin."

જopyright 2002 Hewlett-Packard Company Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners.
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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.

Conectiva Affected

Debian Affected

FreeBSD Affected

Guardian Digital Inc. Affected

Hewlett-Packard Company Affected

IBM Affected

Juniper Networks Affected

MandrakeSoft Affected

NetBSD Affected

Novell Affected

OpenBSD Affected

OpenSSH Affected

Openwall GNU/*/Linux Affected

Notified: February 14, 2002 Updated: March 12, 2002

Status

Affected

Vendor Statement

All versions of Openwall GNU/*/Linux (Owl) prior to the 2002/02/15 Owl-current snapshot are affected by the zlib double-free vulnerability. Owl-current after 2002/02/15 includes the proper fixes in its userland packages. In order to not place the users of other vendors' products at additional risk, we have agreed to delay documenting this as a security change and including the fixes in Owl 0.1-stable until there's a coordinated public announcement. While we don't normally support this kind of a policy (releasing a fix before there's an announcement), this time handling the vulnerability in this way was consistent with the state of things by the time the (already publicly known) bug was first realized to be a security vulnerability.

The zlib bug could affect the following Owl packages: gnupg, openssh, rpm, texinfo (not necessarily in a security sense). Of these, the OpenSSH could potentially allow for an active remote attack resulting in a root compromise. If only SSH protocol version 1 is allowed in the OpenSSH server this is reduced to a local attack, but reverse remote attack possibilities by a malicious server remain. Additionally, any third-party software that makes use of the provided zlib library could be affected.

Parts of the Linux 2.2 kernel included in Owl were also affected by the vulnerability. Fortunately, those parts (Deflate compression support for PPP and the experimental Deflate compression extension to IrDA) are normally not used by the Owl userland. The bug has been corrected starting with Linux 2.2.20-ow2 which has been made public and a part of both Owl-current and Owl 0.1-stable on 2002/03/03. This change, however, will only be documented in the publicly-available change logs on the coordinated public announcement date.

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.

Red Hat Inc. Affected

SGI Affected

Notified: February 23, 2002 Updated: April 17, 2003

Status

Affected

Vendor Statement

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

______________________________________________________________________________ SGI Security Advisory

Title: X Windows zlib/MIT-SHM/huge font DoS vulnerabilities Number: 20021001-01-P Date: October 15, 2002 References: CVE CAN-2002-164 References: CVE CVE-2002-0059 References: CERT CA-2002-07

______________________________________________________________________________

- ----------------------- - --- Issue Specifics --- - -----------------------

This bulletin covers several graphics-related security issues:

o It's been reported that the zlib libraries that ship with x_eoe have a "double free" vulnerability.

See: http://www.kb.cert.org/vuls/id/368819

o It's been reported that the IRIX X server has security vulnerabilities.

1) Under certain conditions, Mozilla can cause the X server to crash.

See: http://web.lemuria.org/security/mozilla-dos.html for details.

2) There is a vulnerability in the MIT-SHM code that can allow a local user to read or write to any SHM segment.

See: http://www.linuxsecurity.com/advisories/caldera_advisory-2006.html

SGI has investigated the issue and recommends the following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures be implemented on ALL vulnerable SGI systems.

These issues have been corrected in future releases of IRIX and with patches.

- -------------- - --- Impact --- - --------------

The X server (/usr/bin/X11/Xsgi) is installed by default on IRIX 6.5 systems as part of x_eoe.sw.Server.

To determine the version of IRIX you are running, execute the following command:

# uname -R

That will return a result similar to the following:

# 6.5 6.5.16f

The first number ("6.5") is the release name, the second ("6.5.15f" in this case) is the extended release name. The extended release name is the "version" we refer to throughout this document.

Exploitation of these vulnerabilities can result in a root compromise or a Denial of Service attack. A local account is required to exploit these vulnerabilities.

- ---------------------------- - --- Temporary Workaround --- - ----------------------------

There is no good workaround available for these problems if running in graphical mode is desired. SGI recommends either upgrading to IRIX 6.5.18 when it is released, or installing the appropriate patch from the listing below.

If running in graphical mode is not needed, you can execute the command "/usr/gfx/stopgfx" and it will turn the windowsystem configuration flag off, kill the X server, and keep it from being restarted on next boot.

- ---------------- - --- Solution --- - ----------------

SGI has provided a series of patches for these vulnerabilities. Our recommendation is to upgrade to IRIX 6.5.18 when available, or install the appropriate patch.

OS Version Vulnerable? Patch # Other Actions ---------- ----------- ------- ------------- IRIX 3.x unknown Note 1 IRIX 4.x unknown Note 1 IRIX 5.x unknown Note 1 IRIX 6.0.x unknown Note 1 IRIX 6.1 unknown Note 1 IRIX 6.2 unknown Note 1 IRIX 6.3 unknown Note 1 IRIX 6.4 unknown Note 1 IRIX 6.5 yes Notes 2 & 3 IRIX 6.5.1 yes Notes 2 & 3 IRIX 6.5.2 yes Notes 2 & 3 IRIX 6.5.3 yes Notes 2 & 3 IRIX 6.5.4 yes Notes 2 & 3 IRIX 6.5.5 yes Notes 2 & 3 IRIX 6.5.6 yes Notes 2 & 3 IRIX 6.5.7 yes Notes 2 & 3
IRIX 6.5.8 yes Notes 2 & 3 IRIX 6.5.9 yes Notes 2 & 3 IRIX 6.5.10 yes Notes 2 & 3 IRIX 6.5.11 yes Notes 2 & 3 IRIX 6.5.12 yes Notes 2 & 3 IRIX 6.5.13m yes 4709 IRIX 6.5.13f yes 4710 IRIX 6.5.14m yes 4648 IRIX 6.5.14f yes 4649 IRIX 6.5.15m yes 4648 IRIX 6.5.15f yes 4649 IRIX 6.5.16m yes 4663 IRIX 6.5.16f yes 4664 IRIX 6.5.17m yes 4757 IRIX 6.5.17f yes 4758

NOTES

1) This version of the IRIX operating has been retired. Upgrade to an actively supported IRIX operating system. See http://support.sgi.com/irix/news/index.html#policy for more information.

2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your SGI Support Provider or URL:http://support.sgi.com/irix/swupdates/

3) Upgrade to IRIX 6.5.18.

##### Patch File Checksums ####

The actual patch will be a tar file containing the following files:

Filename: README.patch.4648 Algorithm #1 (sum -r): 19648 15 README.patch.4648 Algorithm #2 (sum): 13125 15 README.patch.4648 MD5 checksum: 763290A0BE49E2567CCF38B549B44A12

Filename: patch4648.chksums.only Algorithm #1 (sum -r): 63642 4 patch4648.chksums.only Algorithm #2 (sum): 3489 4 patch4648.chksums.only MD5 checksum: 57F22AC9C442B369CA97B5FE40B1FFD3

Filename: patch4648.pgp.and.chksums Algorithm #1 (sum -r): 19096 14 patch4648.pgp.and.chksums Algorithm #2 (sum): 35174 14 patch4648.pgp.and.chksums MD5 checksum: C1850DF90F1B478954029EB25B56A797

Filename: patchSG0004648 Algorithm #1 (sum -r): 28932 12 patchSG0004648 Algorithm #2 (sum): 14723 12 patchSG0004648 MD5 checksum: 3BB3B908AC0F03B03E18B997BA141D87

Filename: patchSG0004648.dev_sw Algorithm #1 (sum -r): 16294 4954 patchSG0004648.dev_sw Algorithm #2 (sum): 55525 4954 patchSG0004648.dev_sw MD5 checksum: C14692DA3EB8C12BA8BD3E0348FFA293

Filename: patchSG0004648.dmedia_dev_sw Algorithm #1 (sum -r): 54547 1427 patchSG0004648.dmedia_dev_sw Algorithm #2 (sum): 12560 1427 patchSG0004648.dmedia_dev_sw MD5 checksum: 6EC5EA9017F67D10FC235F4B4715D60A

Filename: patchSG0004648.dmedia_eoe_sw Algorithm #1 (sum -r): 14809 1058 patchSG0004648.dmedia_eoe_sw Algorithm #2 (sum): 17027 1058 patchSG0004648.dmedia_eoe_sw MD5 checksum: 75C87688D66029FD8A577494ED78E6CA

Filename: patchSG0004648.idb Algorithm #1 (sum -r): 45557 10 patchSG0004648.idb Algorithm #2 (sum): 57173 10 patchSG0004648.idb MD5 checksum: 3C3BC01AEB6866C663EED9639D8198E0

Filename: patchSG0004648.x_dev_sw Algorithm #1 (sum -r): 51347 2830 patchSG0004648.x_dev_sw Algorithm #2 (sum): 55679 2830 patchSG0004648.x_dev_sw MD5 checksum: D3690E5AC5CB9D5E0807660A1EF55C2B

Filename: patchSG0004648.x_dev_sw64 Algorithm #1 (sum -r): 23224 1766 patchSG0004648.x_dev_sw64 Algorithm #2 (sum): 2654 1766 patchSG0004648.x_dev_sw64 MD5 checksum: 8E19C61F4CD34B6930490C6724E592E3

Filename: patchSG0004648.x_eoe_sw Algorithm #1 (sum -r): 31097 19287 patchSG0004648.x_eoe_sw Algorithm #2 (sum): 47280 19287 patchSG0004648.x_eoe_sw MD5 checksum: D4B3827EBBDC14A320E12818EC409EB3

Filename: patchSG0004648.x_eoe_sw64 Algorithm #1 (sum -r): 05516 3872 patchSG0004648.x_eoe_sw64 Algorithm #2 (sum): 41234 3872 patchSG0004648.x_eoe_sw64 MD5 checksum: EDFE10A12E6AFC0D0846DA9B5BFF1FB0

Filename: README.patch.4649 Algorithm #1 (sum -r): 07444 15 README.patch.4649 Algorithm #2 (sum): 13141 15 README.patch.4649 MD5 checksum: C5538980016C96C3D1E60F1F86298AAE

Filename: patchSG0004649 Algorithm #1 (sum -r): 47428 12 patchSG0004649 Algorithm #2 (sum): 14587 12 patchSG0004649 MD5 checksum: 4C416CCBF8169CCD41183AA952BF68E5

Filename: patchSG0004649.dev_sw Algorithm #1 (sum -r): 44079 4956 patchSG0004649.dev_sw Algorithm #2 (sum): 10141 4956 patchSG0004649.dev_sw MD5 checksum: AFA1E08A8C3C5A251F9097CE11248E3B

Filename: patchSG0004649.dmedia_dev_sw Algorithm #1 (sum -r): 11964 1428 patchSG0004649.dmedia_dev_sw Algorithm #2 (sum): 38664 1428 patchSG0004649.dmedia_dev_sw MD5 checksum: EF0DAF20D2294F9C35E4D01FA7769D0E

Filename: patchSG0004649.dmedia_eoe_sw Algorithm #1 (sum -r): 39189 1058 patchSG0004649.dmedia_eoe_sw Algorithm #2 (sum): 14792 1058 patchSG0004649.dmedia_eoe_sw MD5 checksum: 6E83F4B6D9B59FD50197B789ED79D52B

Filename: patchSG0004649.idb Algorithm #1 (sum -r): 37792 10 patchSG0004649.idb Algorithm #2 (sum): 51498 10 patchSG0004649.idb MD5 checksum: F9182410F6DA9FF347D3DAA4D6372F8A

Filename: patchSG0004649.x_dev_sw Algorithm #1 (sum -r): 57772 2831 patchSG0004649.x_dev_sw Algorithm #2 (sum): 3606 2831 patchSG0004649.x_dev_sw MD5 checksum: 2B8752ABCCB9D4178CD7EA5595ED4B27

Filename: patchSG0004649.x_dev_sw64 Algorithm #1 (sum -r): 09443 1767 patchSG0004649.x_dev_sw64 Algorithm #2 (sum): 12618 1767 patchSG0004649.x_dev_sw64 MD5 checksum: 519B9D3CF7C561C33E66E58C04E355F8

Filename: patchSG0004649.x_eoe_sw Algorithm #1 (sum -r): 45988 19291 patchSG0004649.x_eoe_sw Algorithm #2 (sum): 55233 19291 patchSG0004649.x_eoe_sw MD5 checksum: C47659D9AFA1B1D8A980AEBF3369FC7D

Filename: patchSG0004649.x_eoe_sw64 Algorithm #1 (sum -r): 63429 3914 patchSG0004649.x_eoe_sw64 Algorithm #2 (sum): 42601 3914 patchSG0004649.x_eoe_sw64 MD5 checksum: 7FEB20B624CDF12994963466B8339E0F

Filename: README.patch.4663 Algorithm #1 (sum -r): 20333 12 README.patch.4663 Algorithm #2 (sum): 7518 12 README.patch.4663 MD5 checksum: D015F7A81554A08D88B75A190BA5EF23

Filename: patchSG0004663 Algorithm #1 (sum -r): 26976 8 patchSG0004663 Algorithm #2 (sum): 51679 8 patchSG0004663 MD5 checksum: 3127F7F8CD6D3859C329478F29989509

Filename: patchSG0004663.dev_sw Algorithm #1 (sum -r): 50053 4944 patchSG0004663.dev_sw Algorithm #2 (sum): 1123 4944 patchSG0004663.dev_sw MD5 checksum: 612336109805B45764EB5EA9F997C27E

Filename: patchSG0004663.dmedia_eoe_sw Algorithm #1 (sum -r): 09775 2052 patchSG0004663.dmedia_eoe_sw Algorithm #2 (sum): 15288 2052 patchSG0004663.dmedia_eoe_sw MD5 checksum: 7B78D73D67C80D9F37FE132134E55AE2

Filename: patchSG0004663.idb Algorithm #1 (sum -r): 06345 9 patchSG0004663.idb Algorithm #2 (sum): 20713 9 patchSG0004663.idb MD5 checksum: C9A228449A0D5A8F78B3D3DE31FDC789

Filename: patchSG0004663.x_dev_sw Algorithm #1 (sum -r): 29626 2912 patchSG0004663.x_dev_sw Algorithm #2 (sum): 22721 2912 patchSG0004663.x_dev_sw MD5 checksum: 1AD91E3743B44EB9D239A7FF8B3DCCBE

Filename: patchSG0004663.x_dev_sw64 Algorithm #1 (sum -r): 50100 1768 patchSG0004663.x_dev_sw64 Algorithm #2 (sum): 37585 1768 patchSG0004663.x_dev_sw64 MD5 checksum: F01B4440B72B7C355F0083BCBD02AB62

Filename: patchSG0004663.x_eoe_sw Algorithm #1 (sum -r): 39553 17149 patchSG0004663.x_eoe_sw Algorithm #2 (sum): 7971 17149 patchSG0004663.x_eoe_sw MD5 checksum: F8677AF45C45F8BCC628A9B4B72E1C36

Filename: patchSG0004663.x_eoe_sw64 Algorithm #1 (sum -r): 28690 3895 patchSG0004663.x_eoe_sw64 Algorithm #2 (sum): 43249 3895 patchSG0004663.x_eoe_sw64 MD5 checksum: E9D8885D8D0EABD464D622A6B8C20A0B

Filename: README.patch.4664 Algorithm #1 (sum -r): 52142 12 README.patch.4664 Algorithm #2 (sum): 7572 12 README.patch.4664 MD5 checksum: 5D4E5F9F443D4BFAA5B16B87EE04FF82

Filename: patchSG0004664 Algorithm #1 (sum -r): 16851 8 patchSG0004664 Algorithm #2 (sum): 58003 8 patchSG0004664 MD5 checksum: F1FDDAED26791293E2C40CA11309EE73

Filename: patchSG0004664.dev_sw Algorithm #1 (sum -r): 06665 4969 patchSG0004664.dev_sw Algorithm #2 (sum): 61714 4969 patchSG0004664.dev_sw MD5 checksum: C3C1B3F7027E8CFA2007C270BDBB98C9

Filename: patchSG0004664.dmedia_eoe_sw Algorithm #1 (sum -r): 37664 2052 patchSG0004664.dmedia_eoe_sw Algorithm #2 (sum): 46869 2052 patchSG0004664.dmedia_eoe_sw MD5 checksum: 23562ECDE183910E728C5D082B280352

Filename: patchSG0004664.idb Algorithm #1 (sum -r): 17964 9 patchSG0004664.idb Algorithm #2 (sum): 20986 9 patchSG0004664.idb MD5 checksum: 64ECD84929751DD84934FD0B92A92AA7

Filename: patchSG0004664.x_dev_sw Algorithm #1 (sum -r): 17678 2912 patchSG0004664.x_dev_sw Algorithm #2 (sum): 37775 2912 patchSG0004664.x_dev_sw MD5 checksum: 547263071E4481C4FE7C72B5CB988837

Filename: patchSG0004664.x_dev_sw64 Algorithm #1 (sum -r): 51740 1771 patchSG0004664.x_dev_sw64 Algorithm #2 (sum): 30768 1771 patchSG0004664.x_dev_sw64 MD5 checksum: D4078363D7F450D5907B98D61F12C4A5

Filename: patchSG0004664.x_eoe_sw Algorithm #1 (sum -r): 56676 17144 patchSG0004664.x_eoe_sw Algorithm #2 (sum): 42847 17144 patchSG0004664.x_eoe_sw MD5 checksum: A8894B977CFEB0CEEE115CD252BB2D6D

Filename: patchSG0004664.x_eoe_sw64 Algorithm #1 (sum -r): 44535 3903 patchSG0004664.x_eoe_sw64 Algorithm #2 (sum): 13310 3903 patchSG0004664.x_eoe_sw64 MD5 checksum: E564EA0AFB18EF77A67BB1E90C67346C

Filename: README.patch.4709 Algorithm #1 (sum -r): 54795 10 README.patch.4709 Algorithm #2 (sum): 5764 10 README.patch.4709 MD5 checksum: 02B6646BEAD5220EB028B8DDA890FC45

Filename: patchSG0004709 Algorithm #1 (sum -r): 19667 5 patchSG0004709 Algorithm #2 (sum): 13760 5 patchSG0004709 MD5 checksum: 8779F029143A7E7A0C2463D2817F75ED

Filename: patchSG0004709.dmedia_eoe_sw Algorithm #1 (sum -r): 55325 2024 patchSG0004709.dmedia_eoe_sw Algorithm #2 (sum): 54859 2024 patchSG0004709.dmedia_eoe_sw MD5 checksum: 4C3798409C8C8208CF4CBE0458C9BBC4

Filename: patchSG0004709.idb Algorithm #1 (sum -r): 13705 5 patchSG0004709.idb Algorithm #2 (sum): 59734 5 patchSG0004709.idb MD5 checksum: 82DE19E57E969FD31BDF129F4EC20208

Filename: patchSG0004709.x_dev_sw Algorithm #1 (sum -r): 40202 240 patchSG0004709.x_dev_sw Algorithm #2 (sum): 38774 240 patchSG0004709.x_dev_sw MD5 checksum: 9EF6548A89FFBF6E0C55DBAD86F90EF8

Filename: patchSG0004709.x_dev_sw64 Algorithm #1 (sum -r): 09364 151 patchSG0004709.x_dev_sw64 Algorithm #2 (sum): 24763 151 patchSG0004709.x_dev_sw64 MD5 checksum: F5123FBF8FB1E7D40C0AE76B32B30A35

Filename: patchSG0004709.x_eoe_sw Algorithm #1 (sum -r): 63497 11653 patchSG0004709.x_eoe_sw Algorithm #2 (sum): 55851 11653 patchSG0004709.x_eoe_sw MD5 checksum: C044A9D8826209D129CA408A2942EE9C

Filename: README.patch.4710 Algorithm #1 (sum -r): 33104 10 README.patch.4710 Algorithm #2 (sum): 5672 10 README.patch.4710 MD5 checksum: FF470C94A047A26BE948B1B6B395D0BA

Filename: patchSG0004710 Algorithm #1 (sum -r): 54983 5 patchSG0004710 Algorithm #2 (sum): 18095 5 patchSG0004710 MD5 checksum: 8BBA0355F5697B25AD14FC0F77F4DBB3

Filename: patchSG0004710.dmedia_eoe_sw Algorithm #1 (sum -r): 58724 2030 patchSG0004710.dmedia_eoe_sw Algorithm #2 (sum): 54553 2030 patchSG0004710.dmedia_eoe_sw MD5 checksum: 250A8F059CC1CBED9103B817CDA55DFB

Filename: patchSG0004710.idb Algorithm #1 (sum -r): 37173 5 patchSG0004710.idb Algorithm #2 (sum): 60119 5 patchSG0004710.idb MD5 checksum: AA92D95A35FD3E871BF66D29294186C2

Filename: patchSG0004710.x_dev_sw Algorithm #1 (sum -r): 43943 240 patchSG0004710.x_dev_sw Algorithm #2 (sum): 18781 240 patchSG0004710.x_dev_sw MD5 checksum: B2F06D058040310C5C67A254080F5734

Filename: patchSG0004710.x_dev_sw64 Algorithm #1 (sum -r): 34551 151 patchSG0004710.x_dev_sw64 Algorithm #2 (sum): 20425 151 patchSG0004710.x_dev_sw64 MD5 checksum: 2DBE25A690C2F18A5643DE82256C6841

Filename: patchSG0004710.x_eoe_sw Algorithm #1 (sum -r): 35591 11635 patchSG0004710.x_eoe_sw Algorithm #2 (sum): 55324 11635 patchSG0004710.x_eoe_sw MD5 checksum: 64183364C94F0D08BFD70960A7D7AE0D

Filename: README.patch.4757 Algorithm #1 (sum -r): 31919 9 README.patch.4757 Algorithm #2 (sum): 6853 9 README.patch.4757 MD5 checksum: 59C90A013D404F56C60BECF6E49F9532

Filename: patchSG0004757 Algorithm #1 (sum -r): 51651 2 patchSG0004757 Algorithm #2 (sum): 43183 2 patchSG0004757 MD5 checksum: F035444DC5A27037DBAB67138505A8AF

Filename: patchSG0004757.idb Algorithm #1 (sum -r): 38944 3 patchSG0004757.idb Algorithm #2 (sum): 51661 3 patchSG0004757.idb MD5 checksum: D8D62F8BBEC9B4660D1EA726B57F8AA9

Filename: patchSG0004757.x_eoe_sw Algorithm #1 (sum -r): 18457 11235 patchSG0004757.x_eoe_sw Algorithm #2 (sum): 12989 11235 patchSG0004757.x_eoe_sw MD5 checksum: 35BE4F4C9FE12BCB2489A56EC14EDD07

Filename: README.patch.4758 Algorithm #1 (sum -r): 07884 9 README.patch.4758 Algorithm #2 (sum): 6869 9 README.patch.4758 MD5 checksum: 8BADEE8856A97B2F67AB7CB8C6A74D4B

Filename: patchSG0004758 Algorithm #1 (sum -r): 15890 2 patchSG0004758 Algorithm #2 (sum): 40799 2 patchSG0004758 MD5 checksum: A362C93D014DFBE7E881038BA959BF04

Filename: patchSG0004758.idb Algorithm #1 (sum -r): 63456 3 patchSG0004758.idb Algorithm #2 (sum): 51709 3 patchSG0004758.idb MD5 checksum: 7DDE5D803277DCA82EFB33D63DFA5DB9

Filename: patchSG0004758.x_eoe_sw Algorithm #1 (sum -r): 33795 11219 patchSG0004758.x_eoe_sw Algorithm #2 (sum): 16001 11219 patchSG0004758.x_eoe_sw MD5 checksum: B3D9040A5B1FE3A546860AA8CB0B0F1B

- ------------------ - --- References --- - ------------------

SGI Security Advisories can be found at:http://www.sgi.com/support/security/ andftp://patches.sgi.com/support/free/security/advisories/

SGI Security Patches can be found at:http://www.sgi.com/support/security/ andftp://patches.sgi.com/support/free/security/patches/

SGI patches for IRIX can be found at the following patch servers:http://support.sgi.com/irix/ and ftp://patches.sgi.com/

SGI freeware updates for IRIX can be found at:http://freeware.sgi.com/

SGI fixes for SGI open sourced code can be found on:http://oss.sgi.com/projects/

SGI patches and RPMs for Linux can be found at:http://support.sgi.com/linux/ orhttp://oss.sgi.com/projects/sgilinux-combined/download/security-fixes/

SGI patches for Windows NT or 2000 can be found at:http://support.sgi.com/nt/

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at:http://support.sgi.com/irix/ and ftp://patches.sgi.com/support/patchset/

IRIX 6.5 Maintenance Release Streams can be found at:http://support.sgi.com/colls/patches/tools/relstream/index.html

IRIX 6.5 Software Update CDs can be obtained from:http://support.sgi.com/irix/swupdates/

The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com (216.32.174.211). Security advisories and patches are located under the URLftp://patches.sgi.com/support/free/security/

For security and patch management reasons, ftp.sgi.com (mirrors patches.sgi.com security FTP repository) lags behind and does not do a real-time update.

- ------------------------ - --- Acknowledgments ---- - ------------------------

SGI wishes to thank FIRST and the users of the Internet Community at large for their assistance in this matter.

- ----------------------------------------- - --- SGI Security Information/Contacts --- - -----------------------------------------

If there are questions about this document, email can be sent to security-info@sgi.com.

------oOo------

SGI provides security information and patches for use by the entire SGI community. This information is freely available to any person needing the information and is available via anonymous FTP and the Web.

The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com (216.32.174.211). Security advisories and patches are located under the URLftp://patches.sgi.com/support/free/security/

The SGI Security Headquarters Web page is accessible at the URL:http://www.sgi.com/support/security/

For issues with the patches on the FTP sites, email can be sent to security-info@sgi.com.

For assistance obtaining or working with security patches, please contact your SGI support provider.

------oOo------

SGI provides a free security mailing list service called wiretap and encourages interested parties to self-subscribe to receive (via email) all SGI Security Advisories when they are released. Subscribing to the mailing list can be done via the Web (http://www.sgi.com/support/security/wiretap.html) or by sending email to SGI as outlined below.

% mail wiretap-request@sgi.com subscribe wiretap <YourEmailAddress> end ^d

In the example above, <YourEmailAddress> is the email address that you wish the mailing list information sent to. The word end must be on a separate line to indicate the end of the body of the message. The control-d (^d) is used to indicate to the mail program that you are finished composing the mail message.

------oOo------

SGI provides a comprehensive customer World Wide Web site. This site is located athttp://www.sgi.com/support/security/ .

------oOo------

If there are general security questions on SGI systems, email can be sent to security-info@sgi.com.

For reporting *NEW* SGI security issues, email can be sent to security-alert@sgi.com or contact your SGI support provider. A support contract is not required for submitting a security report.

______________________________________________________________________________ This information is provided freely to all interested parties and may be redistributed provided that it is not altered in any way, SGI is appropriately credited and the document retains and includes its valid PGP signature.

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-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________ SGI Security Advisory
Title : Java Security Fixes Number : 20030303-01-I Date : March 19, 2003 Reference: CERT CA-2002-07 Reference: CERT VU#368819 Reference: CVE CAN-2002-0059 Reference: SGI BUGS 875825 875826 874656 868744 Fixed in : Java2 v1.4.1 APIs.
______________________________________________________________________________
- ----------------------- - --- Issue Specifics --- - -----------------------
It's been reported that there are multiple vulnerabilities in Java:
o A defect in the Java(TM) Virtual Machine may allow illegal access to protected fields or methods of an object: http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F50083
o The Java(TM) Secure Socket Extension (JSSE) may incorrectly validate the digital certificate of a web site: http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F50081
o The Java Plug-in may incorrectly validate the digital certificates of signed JAR files: http://online.securityfocus.com/archive/1/300767 http://lsd-pl.net/java_security.html
o A defect in the Bytecode Verifier may allow new instances of objects to be created without calling the proper initialization method from within the constructor of the created class: http://sunsolve.Sun.COM/pub-cgi/retrieve.pl?doc=fsalert%2F49304
o CERT has reported a bug in the zlib compression library: http://www.cert.org/advisories/CA-2002-07.html http://sunsolve.sun.com/pub-cgi/retrieve.pl?&doc=secbull/220 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0059
SGI's implementations of the Java(TM) Runtime Environment include zlib and are affected. This bug may allow malicious code to corrupt memory and possibly crash the Java Runtime Environment.
SGI has investigated the issues and recommends the following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures be implemented on ALL vulnerable SGI systems.
These issues have been corrected in SGI's release of the Java2 v1.4.1 APIs.

- -------------- - --- Impact --- - --------------
Java is installed by default on IRIX 6.5 systems as part of java_eoe.
To determine the version of IRIX you are running, execute the following command:
# /bin/uname -R
That will return a result similar to the following:
# 6.5 6.5.19f
The first number ("6.5") is the release name, the second ("6.5.16f" in this case) is the extended release name. The extended release name is the "version" we refer to throughout this document.

- ---------------------------- - --- Temporary Workaround --- - ----------------------------
There is no workaround for these issues. SGI recommends installing the new Java API package noted below.

- ---------------- - --- Solution --- - ----------------
SGI has provided a new version of Java (version 1.4.1) to address these vulnerabilities. Our recommendation is to upgrade to this version of Java.
OS Version Vulnerable? Patch # Other Actions ---------- ----------- ------- ------------- IRIX 3.x unknown Note 1 IRIX 4.x unknown Note 1 IRIX 5.x unknown Note 1 IRIX 6.0.x unknown Note 1 IRIX 6.1 unknown Note 1 IRIX 6.2 unknown Note 1 IRIX 6.3 unknown Note 1 IRIX 6.4 unknown Note 1 IRIX 6.5 yes Notes 2 & 3 IRIX 6.5.1 yes Notes 2 & 3 IRIX 6.5.2 yes Notes 2 & 3 IRIX 6.5.3 yes Notes 2 & 3 IRIX 6.5.4 yes Notes 2 & 3 IRIX 6.5.5 yes Notes 2 & 3 IRIX 6.5.6 yes Notes 2 & 3 IRIX 6.5.7 yes Notes 2 & 3 IRIX 6.5.8 yes Notes 2 & 3 IRIX 6.5.9 yes Notes 2 & 3 IRIX 6.5.10 yes Notes 2 & 3 IRIX 6.5.11 yes Notes 2 & 3 IRIX 6.5.12 yes Notes 2 & 3 IRIX 6.5.13 yes Notes 2 & 3 IRIX 6.5.14 yes Notes 2 & 3 IRIX 6.5.15 yes Notes 2 & 3 IRIX 6.5.16 yes Notes 2 & 3 IRIX 6.5.17 yes Notes 2 & 3 IRIX 6.5.18 yes Notes 2 & 3 IRIX 6.5.19 yes Notes 2 & 3
NOTES
1) This version of the IRIX operating has been retired. Upgrade to an actively supported IRIX operating system. See IRIX Support Policy on http://support.sgi.com/for more information.
2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your SGI Support Provider or login to http://support.sgi.com/
3) Both Java2 v1.4.1 and the plugin are now available from Silicon Surf's "Download Cool Software" page http://www.sgi.com/products/evaluation

- ------------------------ - --- Acknowledgments ---- - ------------------------
SGI wishes to thank Sun Microsystems, Last Stage of Delirium, and the users of the Internet Community at large for their assistance in this matter.

- ------------- - --- Links --- - -------------
SGI Security Advisories can be found at: http://www.sgi.com/support/security/ and ftp://patches.sgi.com/support/free/security/advisories/
SGI Security Patches can be found at: http://www.sgi.com/support/security/ and ftp://patches.sgi.com/support/free/security/patches/
SGI patches for IRIX can be found at the following patch servers: http://support.sgi.com/irix/ and ftp://patches.sgi.com/
SGI freeware updates for IRIX can be found at: http://freeware.sgi.com/
SGI fixes for SGI open sourced code can be found on: http://oss.sgi.com/projects/
SGI patches and RPMs for Linux can be found at: http://support.sgi.com/linux/ or http://oss.sgi.com/projects/sgilinux-combined/download/security-fixes/
SGI patches for Windows NT or 2000 can be found at: http://support.sgi.com/nt/
IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at: http://support.sgi.com/irix/ and ftp://patches.sgi.com/support/patchset/
IRIX 6.5 Maintenance Release Streams can be found at: http://support.sgi.com/colls/patches/tools/relstream/index.html
IRIX 6.5 Software Update CDs can be obtained from: http://support.sgi.com/irix/swupdates/
The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com (216.32.174.211). Security advisories and patches are located under the URL ftp://patches.sgi.com/support/free/security/
For security and patch management reasons, ftp.sgi.com (mirrors patches.sgi.com security FTP repository) lags behind and does not do a real-time update.

- ----------------------------------------- - --- SGI Security Information/Contacts --- - -----------------------------------------
If there are questions about this document, email can be sent to security-info@sgi.com.
------oOo------
SGI provides security information and patches for use by the entire SGI community. This information is freely available to any person needing the information and is available via anonymous FTP and the Web.
The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com (216.32.174.211). Security advisories and patches are located under the URL ftp://patches.sgi.com/support/free/security/
The SGI Security Headquarters Web page is accessible at the URL: http://www.sgi.com/support/security/
For issues with the patches on the FTP sites, email can be sent to security-info@sgi.com.
For assistance obtaining or working with security patches, please contact your SGI support provider.
------oOo------
SGI provides a free security mailing list service called wiretap and encourages interested parties to self-subscribe to receive (via email) all SGI Security Advisories when they are released. Subscribing to the mailing list can be done via the Web (http://www.sgi.com/support/security/wiretap.html) or by sending email to SGI as outlined below.
% mail wiretap-request@sgi.com subscribe wiretap <YourEmailAddress such as midwatch@sgi.com > end ^d
In the example above, <YourEmailAddress> is the email address that you wish the mailing list information sent to. The word end must be on a separate line to indicate the end of the body of the message. The control-d (^d) is used to indicate to the mail program that you are finished composing the mail message.

------oOo------
SGI provides a comprehensive customer World Wide Web site. This site is located at http://www.sgi.com/support/security/ .
------oOo------
If there are general security questions on SGI systems, email can be sent to security-info@sgi.com.
For reporting *NEW* SGI security issues, email can be sent to security-alert@sgi.com or contact your SGI support provider. A support contract is not required for submitting a security report.
______________________________________________________________________________ This information is provided freely to all interested parties and may be redistributed provided that it is not altered in any way, SGI is appropriately credited and the document retains and includes its valid PGP signature.
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Vendor Information

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

Addendum

Please note that the above section contains two SGI security advisories.

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

Slackware Affected

SuSE Inc. Affected

Sun Microsystems Inc. Affected

The SCO Group (SCO Linux) Affected

Trustix Affected

XFree86 Affected

zlib.org Affected

Apple Computer Inc. Not Affected

F-Secure Not Affected

Fujitsu Not Affected

Microsoft Corporation Not Affected

SSH Communications Security Not Affected

AOL Time Warner Unknown

AT&T Unknown

Apache Unknown

BSDI Unknown

Computer Associates Unknown

Data General Unknown

Lotus Software Unknown

Lucent Technologies Unknown

Multinet Unknown

NEC Corporation Unknown

Netscape Communications Corporation Unknown

Nortel Networks Unknown

Oracle Corporation Unknown

Sequent Unknown

Sony Corporation Unknown

The Open Group Unknown

The SCO Group (SCO UnixWare) Unknown

Unisys Unknown

Wind River Systems Inc. Unknown

libpng.org Unknown

View all 49 vendors View less vendors

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

Acknowledgements

The CERT/CC thanks Owen Taylor and Mark Cox of Red Hat, Inc. for reporting this vulnerability. We also thank Mark Adler of zlib.org for contributing to our research and Matthias Clasen for contributing to the discovery of this vulnerability.

This document was written by Jeffrey P. Lanza.

Other Information

CVE IDs:	CVE-2002-0059
CERT Advisory:	CA-2002-07
Severity Metric:	21.38
Date Public:	2002-03-11
Date First Published:	2002-03-11
Date Last Updated:	2005-07-08 13:33 UTC
Document Revision:	62

Software Engineering Institute

CERT Coordination Center

Double Free Bug in zlib Compression Library Corrupts malloc's Internal Data Structures

Vulnerability Note VU#368819

Overview

Description

Impact

Solution

Vendor Information

Cisco Systems Inc. Affected

Compaq Computer Corporation Affected

Conectiva Affected

Debian Affected

FreeBSD Affected

Guardian Digital Inc. Affected

Hewlett-Packard Company Affected

IBM Affected

Juniper Networks Affected

MandrakeSoft Affected

NetBSD Affected

Novell Affected

OpenBSD Affected

OpenSSH Affected

Openwall GNU/*/Linux Affected

Red Hat Inc. Affected

SGI Affected

Slackware Affected

SuSE Inc. Affected

Sun Microsystems Inc. Affected

The SCO Group (SCO Linux) Affected

Trustix Affected

XFree86 Affected

zlib.org Affected

Apple Computer Inc. Not Affected

F-Secure Not Affected

Fujitsu Not Affected

Microsoft Corporation Not Affected

SSH Communications Security Not Affected