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                                  CERT-Renater

                       Note d'Information No. 2004/VULN363
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DATE                      : 25/08/2004

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running CDE Mailer dtmail.

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Sun(sm) Alert Notification

             * Sun Alert ID: 57627
             *
             Synopsis: Buffer Overflow in the CDE Mailer dtmail(1X)
             *
             Category: Security
             *
             Product: Solaris
             * BugIDs: 5038601
             * Avoidance: Workaround, Patch
             *
             State: Resolved
             * Date Released: 23-Aug-2004
             * Date Closed: 23-Aug-2004
             * Date Modified:

1. Impact

       Unprivileged local users may be able to gain unauthorized "Group ID"
       (gid) mail privileges due to a buffer overflow in the CDE Mailer
       (dtmail(1X)). This would allow users with access to a mail server the
       ability to read, modify, and delete the e-mail of other users in
       "/var/mail".

       Sun acknowledges, with thanks, iDEFENSE for contacting us regarding
       this issue.

       For additional information regarding this issue, please see:
       [1]http://www.idefense.com/application/poi/display?type=vulnerabilitie
       s

2. Contributing Factors

       This issue can occur in the following releases:

       SPARC Platform
       * CDE 1.4 for Solaris 8 without patch 109613-07
       * CDE 1.5 for Solaris 9 without patch 112810-06

       x86 Platform
       * CDE 1.4 for Solaris 8 without patch 109614-07
       * CDE 1.5 for Solaris 9 without patch 113870-05

       Note: Solaris 7 is not affected by this issue.

3. Symptoms

       There are no symptoms that would indicate the described issue has been
       exploited to gain unauthorized "gid" mail access to a host.
       SOLUTION SUMMARY:

4. Relief/Workaround

       To work around the described issue, remove the "set-group-ID" bit from
       dtmail(1X) by doing the following:
       # chmod 0555 /usr/dt/bin/dtmail


       Note: Removing the "gid" bit from dtmail(1X) may make it impossible to
       read NFS mounted mail boxes.

5. Resolution

       This issue is addressed in the following releases:

       SPARC Platform
       * CDE 1.4 for Solaris 8 with patch 109613-07 or later
       * CDE 1.5 for Solaris 9 with patch 112810-06 or later

       x86 Platform
       * CDE 1.4 for Solaris 8 with patch 109614-07 or later
       * CDE 1.5 for Solaris 9 with patch 113870-05 or later

       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 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa
       Clara, CA 95054 U.S.A. All rights reserved.
             _________________________________________________________________
             _________________________________________________________________
       APPLIES TO:
       ATTACHMENTS:

References

1. http://www.idefense.com/application/poi/display?type=vulnerabilities

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         Les serveurs de référence du CERT-Renater
         http://www.urec.fr/securite
         http://www.cru.fr/securite
         http://www.renater.fr
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	+ CERT-RENATER		| tel : 01-53-94-20-44		+
	+ 151 bd de l'Hopital	| fax : 01-53-94-20-41		+
	+ 75013 Paris		| email: certsvp@renater.fr	+
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