AusCERT - ESB-2007.0302 -- [Solaris] -- Security Vulnerability Relating to the acl(2) System Call May Allow Denial of Service (DoS)

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ESB-2007.0302 -- [Solaris] -- Security Vulnerability Relating to the acl(2) System Call May Allow Denial of Service (DoS)
Date: 09 May 2007

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             AUSCERT External Security Bulletin Redistribution

                        ESB-2007.0302 -- [Solaris]
         Security Vulnerability Relating to the acl(2) System Call
                     May Allow Denial of Service (DoS)
                                9 May 2007

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

Product:              Solaris 10
Publisher:            Sun Microsystems
Operating System:     Solaris 10
Impact:               Denial of Service
Access:               Existing Account

Original Bulletin:  
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102869-1

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Sun(sm) Alert Notification
     * Sun Alert ID: 102869
     * Synopsis: Security Vulnerability Relating to the acl(2) System
       Call May Allow Denial of Service (DoS) to the System
     * Category: Security
     * Product: Solaris 10 Operating System
     * BugIDs: 6492109
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 07-May-2007
     * Date Closed: 07-May-2007
     * Date Modified: 

1. Impact

   A security vulnerability in Solaris 10 related to the acl(2) system
   call may allow a local unprivileged user to cause the system to panic,
   resulting in a denial of service (DoS) to the system.

   Sun acknowledges with thanks, iDefense (http://www.idefense.com),
   for bringing this issue to our attention.

   This issue is also described in the following document:

   http://labs.idefense.com/intelligence/vulnerabilities/display.php?i
   d=524

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 10 without patch 125100-06

   x86 Platform
     * Solaris 10 without patch 125101-06

   Note: Solaris 8 and 9 are not affected by this issue.

3. Symptoms

   Should the described issue occur, the system may panic with a stack
   trace similar to the following:
    unix:panicsys+0x48
    unix:vpanic_common+0x78
    unix:panic+0x1c
    genunix:vmem_xalloc+0x8b0
    genunix:vmem_alloc+0x1d4 

4. Relief/Workaround

   There is no workaround for this issue. Please see the Resolution
   section below.

5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform
     * Solaris 10 with patch 125100-06 or later

   x86 Platform
     * Solaris 10 with patch 125101-06 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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
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The University of Queensland
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Qld 4072

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