Notified:  June 21, 2001 Updated: August 31, 2001

Status

Affected

Vendor Statement

-----BEGIN PGP SIGNED MESSAGE----- Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00206 Date: August 30, 2001 Cross-Ref: CERT Advisory CA-2001-15 Title: in.lpd The information contained in this Security Bulletin is provided "AS IS." Sun makes no warranties of any kind whatsoever with respect to the information contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF NON-INFRINGEMENT OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW. IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. If any of the above provisions are held to be in violation of applicable law, void, or unenforceable in any jurisdiction, then such provisions are waived to the extent necessary for this disclaimer to be otherwise enforceable in such jurisdiction. 1. Bulletins Topics Sun announces the release of patches for Solaris(tm) 8, 7, and 2.6 (SunOS(tm) 5.8, 5.7, and 5.6) which relate to an in.lpd vulnerability reported in CERT CA-2001-15. Sun recommends that you install the patches listed in section 4 immediately on systems running SunOS 5.8, 5.7, and 5.6 which use in.lpd. 2. Who is Affected Vulnerable: SunOS 5.8, 5.8_x86, 5.7, 5.7_x86, 5.6, 5.6_x86 3. Understanding the Vulnerability The in.lpd daemon is the BSD print protocol daemon. The in.lpd daemon implements the network listening service for the BSD print protocol specified in RFC 1179. The BSD print protocol provides a remote interface for systems to interact with a local spooling system. CERT Advisory CA-2001-15 describes a buffer overflow in the in.lpd daemon which may crash in.lpd or allow arbitrary code to be executed with elevated privileges on the victim system. The issue was discovered by ISS X-Force who published an advisory at: http://xforce.iss.net/alerts/advise80.php CERT Advisory CA-2001-15 is available from: http://www.cert.org/advisories/CA-2001-15.html 4. List of Patches The following patches are available in relation to the above problem. OS Version Patch ID SunOS 5.8 109320-04 SunOS 5.8_x86 109321-04 SunOS 5.7 107115-09 SunOS 5.7_x86 107116-09 SunOS 5.6 106235-09 SunOS 5.6_x86 106236-09 APPENDICES A. Patches listed in this bulletin are available to all Sun customers at: http://sunsolve.sun.com/securitypatch B. Checksums for the patches listed in this bulletin are available at: ftp://sunsolve.sun.com/pub/patches/CHECKSUMS C. Sun security bulletins are available at: http://sunsolve.sun.com/security D. Sun Security Coordination Team's PGP key is available at: http://sunsolve.sun.com/pgpkey.txt E. To report or inquire about a security problem with Sun software, contact one or more of the following: - Your local Sun answer centers - Your representative computer security response team, such as CERT - Sun Security Coordination Team. Send email to: security-alert@sun.com F. To receive information or subscribe to our CWS (Customer Warning System) mailing list, send email to: security-alert@sun.com with a subject line (not body) containing one of the following commands: Command Information Returned/Action Taken help An explanation of how to get information key Sun Security Coordination Team's PGP key list A list of current security topics query [topic] The email is treated as an inquiry and is forwarded to the Security Coordination Team report [topic] The email is treated as a security report and is forwarded to the Security Coordination Team. Please encrypt sensitive mail using Sun Security Coordination Team's PGP key send topic A short status summary or bulletin. For example, to retrieve a Security Bulletin #00138, supply the following in the subject line (not body): send #138 subscribe Sender is added to our mailing list. To subscribe, supply the following in the subject line (not body): subscribe cws your-email-address Note that your-email-address should be substituted by your email address. unsubscribe Sender is removed from the CWS mailing list. Copyright 2000 Sun Microsystems, Inc. All rights reserved. Sun, Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries. This Security Bulletin may be reproduced and distributed, provided that this Security Bulletin is not modified in any way and is attributed to Sun Microsystems, Inc. and provided that such reproduction and distribution is performed for non-commercial purposes. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBO46hObdzzzOFBFjJAQE0RwQAtIp3qmARQf/f8Htk9fMrIu9CIm021VPM CkO6NRUqt7xyqQg2tAe9aa8AIMLPpnENdwqhpY8jiy9ITxiUlBfcDh0W9WI8BMxM 5OrRzCpuVZR62AH8R6YER/DNvMDjazWmb0mO9IJRkh1pu38ruFM6hipN+xOgxEfA EvnlKiRaa1E= =BEQv -----END PGP SIGNATURE-----

Vendor Information

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

Addendum

Sun has confirmed the existence of this vulnerability andnow has patches included in a jumbo set provided for all lp services. Until these patches can be applied, the following workarounds may be used to mitigate against the risk of being attacked via exploitation of this vulnerability: Disable the print service in /etc/inetd.conf Enable the noexec_user_stack tunable Block access to 515/tcp (printer) at all appropriate network perimeters