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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2001.542 -- Sun Security Bulletin #00213 login 18 December 2001 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: /bin/login Vendor: Sun Microsystems Operating System: SunOS 5.8 (Solaris 8) SunOS 5.7 (Solaris 7) SunOS 5.6 (Solaris 2.6) SunOS 5.5.1 (Solaris 2.5.1) Platform: i386 SPARC Impact: Root Compromise Access Required: Remote Ref: AL-2001.19 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- ________________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00213 Date: December 14, 2001 Cross-Ref: CERT Advisory CA-2001-34 Title: login ________________________________________________________________________________ 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, 2.6, and 2.5.1 (SunOS(tm) 5.8, 5.7, 5.6, and 5.5.1) which relate to a buffer overflow vulnerability in /bin/login. Sun recommends that you install the patches listed in section 4 immediately on systems running SunOS 5.8, 5.7, 5.6, and 5.5.1. 2. Who is Affected Vulnerable: SunOS 5.8, 5.8_x86, 5.7, 5.7_x86, 5.6, 5.6_x86, 5.5.1, and 5.5.1_x86 3. Understanding the Vulnerability The login command is used at the beginning of each terminal session to identify oneself to the system. login is invoked by the system when a connection is first established, after the previous user has terminated the login shell by issuing the exit command. A buffer overflow has been discovered in login which may be exploited by a local or a remote attacker to gain root access on the affected system. This issue was discovered by ISS X-Force who published an advisory at: http://xforce.iss.net/alerts/advise105.php CERT Advisory CA-2001-34 is available from: http://www.cert.org/advisories/CA-2001-34.html 4. List of Patches A Sun Security Bulletin is usually issued after patches are available on SunSolve. In this case, while the patches are not yet available, they are in the process of being pushed to external servers and should be downloadable in a very short time. OS Version Patch ID __________ _________ SunOS 5.8 111085-02 SunOS 5.8_x86 111086-02 SunOS 5.7 112300-01 SunOS 5.7_x86 112301-01 SunOS 5.6 105665-04 SunOS 5.6_x86 105666-04 SunOS 5.5.1 106160-02 SunOS 5.5.1_x86 106161-02 ______________________________________________________________________________ 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: firstname.lastname@example.org F. To receive information or subscribe to our CWS (Customer Warning System) mailing list, send email to: email@example.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. 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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 iQCVAwUBPBqJ1bdzzzOFBFjJAQHlfQP/WCgq/w7hY7DDmIaq90/gWhy9JplNN574 9dpumknwt8SMK+COwq4sNe0JQj32/q70y2sUAxFjMg8z5TzuX8vhMl8w4TufxUJ5 x8iJ+yUcGZ2sYNbzz2Fz0ClI6H3lISXVhxyQPPHWm9qZdp6Ee9+fgwHqbal8lBt6 tAv+OoE1Fn4= =Lvzf - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: email@example.com Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBPB8riih9+71yA2DNAQGTdwP+Li8VektUO2JYj5oFA010EAv/gI675wz1 cenJNzhi5myuVolBuE3rwTYtNyL8b8LJO4ZzODktdyZy6yjzEt4JJDT0n0aNIuRF nshgjNmoVjovbbSFhgUAwu+/1TlZPvgYRXXoSEYAroXISGyQicdahW2vhby3DL11 16qYeqjnjXo= =mjDv -----END PGP SIGNATURE-----