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                                  CERT-Renater

                       Note d'Information No. 2005/VULN638
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DATE                      : 17/10/2005

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Solaris 10.

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Sun(sm) Alert Notification
      * Sun Alert ID: 101987
      * Synopsis: Security Vulnerability May Allow a Local Unprivileged
        User to Cause a System Panic in the "/proc" Filesystem
      * Category: Security
      * Product: Solaris 10 Operating System
      * BugIDs: 6271688
      * Avoidance: Patch
      * State: Resolved
      * Date Released: 14-Oct-2005
      * Date Closed: 14-Oct-2005
      * Date Modified:

1. Impact

    A security vulnerability in Solaris 10 may allow a local unprivileged
    user the ability to cause a system panic in the "/proc" (see proc(4))
    filesystem, creating a Denial of Service (DoS).

    Note: This issue applies to Solaris 10 systems with and without zones.
    Systems with one or more zones installed may experience this issue in
    both the global and non-global zone(s).

2. Contributing Factors

    This issue can occur in the following releases:

    SPARC Platform
      * Solaris 10 without patch 118822-19

    x86 Platform
      * Solaris 10 without patch 118844-19

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

3. Symptoms

    The system will panic with a message similar to the following:
     BAD TRAP: type=e (#pf Page fault) rp=d48dce48 addr=24 occurred
     in module "procfs" due to a NULL pointer dereference

4. Relief/Workaround

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

5. Resolution

    This issue is addressed in the following releases:

    SPARC Platform
      * Solaris 10 with patch 118822-19 or later

    x86 Platform
      * Solaris 10 with patch 118844-19 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 2000-2005 Sun Microsystems, Inc., 4150 Network Circle, Santa
    Clara, CA 95054 U.S.A. All rights reserved

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