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             AUSCERT External Security Bulletin Redistribution

                          ESB-2006.0715 -- [SUN]
  Sun Cobalt sendmail(8) Security Issue Involving Signal Handling Daemon
                             29 September 2006

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              sendmail(8)
Publisher:            Sun Microsystems
Operating System:     Sun Cobalt RaQ XTR Server
                      Sun Cobalt RaQ 4 Server
                      Sun Cobalt RaQ 550 Server
Impact:               Execute Arbitrary Code/Commands
                      Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2006-0058

Ref:                  AL-2006.0020

Original Bulletin:
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102324-1

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Sun(sm) Alert Notification
     * Sun Alert ID: 102324
     * Synopsis: Sun Cobalt sendmail(8) Security Issue Involving Signal
       Handling Daemon
     * Category: Security
     * Product: Sun Cobalt RaQ XTR Server, Sun Cobalt RaQ 4 Server, Sun
       Cobalt RaQ 550 Server
     * BugIDs: 17084, 17085, 17086
     * Avoidance: Workaround, Patch
     * State: Resolved
     * Date Released: 25-Apr-2006, 27-Sep-2006
     * Date Closed: 27-Sep-2006
     * Date Modified: 27-Sep-2006

1. Impact

   A local or remote unprivileged user may be able to execute arbitrary
   code with elevated privileges or cause a Denial of Service (DoS)
   condition on a Sun Cobalt system due to a security vulnerability in
   the sendmail(8) daemon involving signal handling.

   This issue is referenced in the following documents:

   CERT VU#834865 http://www.kb.cert.org/vuls/id/834865 which is
   referenced in CERT Technical Cyber Security Alert TA06-081A:
   http://www.us-cert.gov/cas/techalerts/TA06-081A.html

2. Contributing Factors

   This issue can occur in the following releases:
     * RaQ4 with sendmail versions 8.10.2-C4stackguard or earlier
     * RaQ550 with sendmail versions 8.11.6-1C6stackguard or earlier
     * RaQXTR with sendmail versions 8.11.6-1C6stackguard or earlier

   with the sendmail(8) service enabled.

   The sendmail package version can be determined by running the
   following command:
    # rpm -qa | grep -i sendmail
    sendmail-8.11.6-1C6stackguard

   To determine whether sendmail(8) is enabled for the various run
   levels, the following command can be used:
    # /sbin/chkconfig --list sendmail
    sendmail 0:off 1:off 2:off 3:on 4:on 5:on 6:off

3. Symptoms

   There are no reliable symptoms that would indicate this issue has been
   exploited to execute arbitrary commands with elevated privileges on a
   system. The symptoms of the Denial of Service would be the sendmail
   daemon no longer running. 

4. Relief/Workaround

   To work around the described issue, sites may wish to block access to
   the affected service from untrusted networks such as the Internet, or
   disable the sendmail daemon where possible. Use a firewall or other
   packet-filtering technology to block the appropriate network ports.
   Consult your vendor or your firewall documentation for detailed
   instructions on how to configure the ports.

   The following command can be used to temporarily disable sendmail for
   all run levels:
    # /sbin/chkconfig --del sendmail

5. Resolution

   This issue is addressed in the following releases:
     * RaQ550 at
       ftp://ftp.cobalt.sun.com/pub/packages/raq550/all/RaQ550-All-Sec
       urity-0.0.1-17084.pkg
     * RaQ4 at
       ftp://ftp.cobalt.sun.com/pub/packages/raq4/jpn/RaQ4-All-Securit
       y-2.0.2-17084.pkg
     * RaQ XTR at
       ftp://ftp.cobalt.sun.com/pub/packages/raqxtr/eng/RaQXTR-All-Sec
       urity-1.0.1-17084.pkg and
     * ftp://ftp.cobalt.sun.com/pub/packages/raqxtr/jpn/RaQXTR-All-Sec
       urity-1.0.1-17084.pkg

Change History

   27-Sep-2006:
     * Updated Resolution section
     * State: Resolved

   This Sun Alert notification is being provided to you on an "AS IS"
   basis. This Sun Alert notification may contain information provided by
   third parties. The issues described in this Sun Alert notification may
   or may not impact your system(s). Sun makes no representations,
   warranties, or guarantees as to the information contained herein. ANY
   AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
   WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
   NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
   YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
   INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
   OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
   This Sun Alert notification contains Sun proprietary and confidential
   information. It is being provided to you pursuant to the provisions of
   your agreement to purchase services from Sun, or, if you do not have
   such an agreement, the Sun.com Terms of Use. This Sun Alert
   notification may only be used for the purposes contemplated by these
   agreements.

   Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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