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FW: UNIRAS Brief - 577/03 - Sun Microsystems Security Briefing



 
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- -----Original Message-----
From: UNIRAS (UK Govt CERT) [mailto:uniras@xxxxxxxxxxxx]
Sent: 20 October 2003 11:34
To: uniras@xxxxxxxxxxxx
Cc: lists@xxxxxxxxxxxxxxxxxxxx
Subject: UNIRAS Brief - 577/03 - Sun Microsystems Security Briefing


 
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   UNIRAS (UK Govt CERT) Briefing Notice - 577/03 dated 20.11.03  Time: 11:40
 UNIRAS is part of NISCC(National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Sun Microsystems Security Briefing:Vulnerability in Solaris "AnswerBook2 
Documentation Server" Daemon.


Detail
====== 

An unprivileged local or remote user may be able to execute arbitrary
commands with the privileges of the AnswerBook2 server daemon, which
is normally uid "daemon", on an AnswerBook2 (AB2) server system.




                ESB-2003.0731 -- Sun(sm) Alert Notification
              Sun Alert ID: 23412 - Vulnerability in Solaris
                "AnswerBook2 Documentation Server" Daemon
                              20 October 2003


Product:                AnswerBook2 Documentation Server Daemon (versions
                        prior to 1.4.3)
Publisher:              Sun Microsystems
Operating System:       Solaris 8
Impact:                 Execute Arbitrary Code/Commands
Access Required:        Remote

Original bulletin available at:

         http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F23412

See also the releated issue (Sun Alert ID: 57400) at:

         http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57400

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   DOCUMENT ID: 23412
   SYNOPSIS: Vulnerability in Solaris "AnswerBook2 Documentation Server"
   Daemon
   DETAIL DESCRIPTION:
   
Sun(sm) Alert Notification

     * Sun Alert ID: 23412
     * Synopsis: Vulnerability in Solaris "AnswerBook2 Documentation"
       Server Daemon
     * Category: Security
     * Product: AnswerBook2 Documentation Server
     * BugIDs: 4353727
     * Avoidance: Upgrade, Patch
     * State: Resolved
     * Date Released: 10-Aug-2000, 16-Oct-2003
     * Date Closed: 10-Aug-2000
     * Date Modified: 10-Aug-2000, 16-Oct-2003
       
1. Impact

   An unprivileged local or remote user may be able to execute arbitrary
   commands with the privileges of the AnswerBook2 server daemon, which
   is normally uid "daemon", on an AnswerBook2 (AB2) server system.
   
   This issue is one of two vulnerabilities discussed in S21sec advisory
   s21sec-004 at: [1]http://www.s21sec.com/en/avisos/s21sec-004-en.txt
   
   The other vulnerability discussed in the S21sec advisory is described
   in Sun Alert 57400.
   
   This issue is also described in Sun Security Bulletin #00196 at:
   [2]http://sunsolve.sun.com/pub-cgi/secBulletin.pl
   
2. Contributing Factors

   This issue can occur in the following releases:
   
   SPARC
     * AnswerBook2 Documentation Server Version 1.4.1 or earlier
     * AnswerBook2 Documentation Server Version 1.4.2 without patch
       110011-02
       
   x86 Platform
     * AnswerBook2 Documentation Server Version 1.4.1 or earlier
     * AnswerBook2 Documentation Server Version 1.4.2 without patch
       110012-02
       
   Notes:
    1. AnswerBook2 is no longer supported as of Solaris 9, and thus
       Solaris 9 is not affected.
    2. AnswerBook2 Documentation Server version 1.4.2 first shipped with
       Solaris 8.
    3. AnswerBook2 Documentation Server versions 1.4.3 and later are not
       affected by this issue.
       
   To determine the version of the currently installed AnswerBook2
   Server, run the following command:
    $ grep SUNW_PRODVERS /var/sadm/pkg/SUNWab2[rsu]/pkginfo
    /var/sadm/pkg/SUNWab2r/pkginfo:SUNW_PRODVERS=1.4.2
    /var/sadm/pkg/SUNWab2s/pkginfo:SUNW_PRODVERS=1.4.2
    /var/sadm/pkg/SUNWab2u/pkginfo:SUNW_PRODVERS=1.4.2

3. Symptoms

   There are no predictable symptoms that would show the described issue
   has been exploited to execute arbitrary commands with the privileges
   of the AnswerBook2 daemon on a system.
   SOLUTION SUMMARY:
   
4. Relief/Workaround

   Sites which have configured AnswerBook2 Documentation Servers may wish
   to disable AB2 and instead refer to Sun documentation at the Sun
   Product Documentation web site at: [3]http://docs.sun.com or view the
   documentation on the Solaris Documentation CD.
   
   To disable the AnswerBook2 Documentation Server, the following
   commands can be run as the root user:
    # /usr/lib/ab2/bin/ab2admin -o stop
    # /usr/lib/ab2/bin/ab2admin -o autostart_no


5. Resolution

   This issue is addressed in the following releases:
   
   SPARC Platform
     * Upgrade to AnswerBook2 Documentation Server version 1.4.2 with
       patch 110011-02
       
   x86 Platform
     * Upgrade to AnswerBook2 Documentation Server version 1.4.2 with
       patch 110012-02
       
   Notes:
    1. Sites with AnswerBook2 Documentation Server version 1.4.1 or
       earlier need to first upgrade AnswerBook2 to version 1.4.2 before
       applying the above patches.
    2. AnswerBook2 Documentation Server version 1.4.2 is available for
       download at: [4]http://www.sun.com/software/ab2
       
Change History:

   15-Oct-2003:
     * Updated: Contributing Factors, Symptoms, Relief/Workaround, and
       Resolution sections
   
   APPLIES TO: Network Security

References

   1. http://www.s21sec.com/en/avisos/s21sec-004-en.txt
   2. http://sunsolve.sun.com/pub-cgi/secBulletin.pl
   3. http://docs.sun.com/
   4. http://www.sun.com/software/ab2



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UNIRAS wishes to acknowledge the contributions of Sun Microsystems for the information
contained in this Briefing. 
- - ----------------------------------------------------------------------------------
This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

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and has contacts with other international Incident Response Teams (IRTs) in 
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rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>
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