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UNIRAS Brief - 431/03 - Sun - Security Vulnerability in the Solaris Runtime Linker + Security Vulnerability in Samba(7) Versions 2.2.2 Through



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   UNIRAS (UK Govt CERT) Briefing Notice - 431/03 dated 30.07.03  Time: 10:35
 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
=====

Two Sun Security Advisories:

1: Security Vulnerability in the Solaris Runtime Linker

2: Security Vulnerability in Samba(7) Versions 2.2.2 Through 2.2.8 May Allow Remote
   User Unauthorized Privileges

Detail
======

1: Security Vulnerability in the Solaris Runtime Linker

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   DOCUMENT ID: 55680
   SYNOPSIS: Security Vulnerability in the Solaris Runtime Linker
   ld.so.1(1)
   DETAIL DESCRIPTION:

Sun(sm) Alert Notification

     * Sun Alert ID: 55680
     * Synopsis: Security Vulnerability in the Solaris Runtime Linker
       ld.so.1(1)
     * Category: Security
     * Product: Solaris
     * BugIDs: 4872634
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 29-Jul-2003
     * Date Closed: 29-Jul-2003
     * Date Modified:

1. Impact

   An unprivileged local user may be able to gain unauthorized root
   privileges due to a buffer overflow in the runtime linker ld.so.1(1).

   Sun acknowledges with thanks, Jouko Pynnönen (jouko@xxxxxx) for
   bringing this issue to our attention and iDEFENSE Inc.
   ([1]www.idefense.com) for coordinating the release of this issue.

   This issue is described in iDEFENSE Advisory located at:
   [2]http://www.idefense.com/advisory/07.29.03.txt.

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 2.6 with patch 107733-10 and without patch 107733-11
     * Solaris 7 with patches 106950-14 through 106950-22 and without
       patch 106950-23
     * Solaris 8 with patches 109147-07 through 109147-24 and without
       patch 109147-25
     * Solaris 9 without patch 112963-09

   x86 Platform
     * Solaris 2.6 with patch 107734-10 and without patch 107734-11
     * Solaris 7 with patches 106951-14 through 106951-22 and without
       patch 106951-23
     * Solaris 8 with patches 109148-07 through 109148-24 and without
       patch 109148-25
     * Solaris 9 without patch 113986-05

3. Symptoms

   There are no reliable symptoms that would show the described issue has
   been exploited.


   SOLUTION SUMMARY:

4. Relief/Workaround

   There is no workaround. Please see the "Resolution" section below.

5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform
     * Solaris 2.6 with patch 107733-11 or later
     * Solaris 7 with patch 106950-23 or later
     * Solaris 8 with patch 109147-25 or later
     * Solaris 9 with patch 112963-09 or later

   x86 Platform
     * Solaris 2.6 with patch 107734-11 or later
     * Solaris 7 with patch 106951-23 or later
     * Solaris 8 with patch 109148-25 or later
     * Solaris 9 with patch 113986-05 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 2000-2003 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved.


References

   1. http://sunsolve.sun.com/pub-cgi/www.idefense.com
   2. http://www.idefense.com/advisory/07.29.03.txt

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2: Security Vulnerability in Samba(7) Versions 2.2.2 Through 2.2.8 May
   Allow Remote User Unauthorized Privileges

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   DOCUMENT ID: 53581
   SYNOPSIS: Security Vulnerability in Samba(7) Versions 2.2.2 Through
   2.2.8 May Allow Remote User Unauthorized Privileges
   DETAIL DESCRIPTION:

Sun(sm) Alert Notification

     * Sun Alert ID: 53581
     * Synopsis: Security Vulnerability in Samba(7) versions 2.2.2
       through 2.2.8 May Allow Remote User Unauthorized Privileges
     * Category: Security
     * Product: Solaris
     * BugIDs: 4833908
     * Avoidance: Workaround, Patch
     * State: Resolved
     * Date Released: 18-Apr-2003, 28-May-2003
     * Date Closed: 28-May-2003
     * Date Modified: 28-May-2003

1. Impact

   Several buffer overflows have been found in Samba(7), at least one of
   which may allow a remote unprivileged user to execute arbitrary code
   with the privileges of the Super User (typically root), on a Solaris 9
   system running as a Samba(7) server.

   This issue is described in CERT Vulnerability Notes VU#298233 (see
   [1]http://www.kb.cert.org/vuls/id/298233) and VU#267873 (see
   [2]http://www.kb.cert.org/vuls/id/267873).

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 9 without patch 114684-02

   x86 Platform
     * Solaris 9 without patch 114685-02

   Only systems configured as Samba servers running Samba versions 2.0.x
   through 2.2.8 are vulnerable to this issue. To determine if a system
   is configured as a Samba server the following command can be run:
    % ls -l /etc/sfw/smb.conf

   To determine the version of Samba installed, the following command can
   be run:
    % /usr/sfw/sbin/smbd -V

   Note: Solaris 2.6, 7, and 8 do not include the Samba software and are
   not affected by this issue. Sun does include Samba on the Solaris
   Companion CD for Solaris 8 as an unsupported package which installs to
   /opt/sfw and is vulnerable to this issue. Sites using the freeware
   version of Samba from the Solaris Companion CD will have to upgrade to
   a later version from Samba.org.

3. Symptoms

   There are no predictable symptoms that would show the described issue
   has been exploited to gain root privileges.
   SOLUTION SUMMARY:

4. Relief/Workaround

   Workaround information can be found in the "Protecting an unpatched
   Samba server" section from the Samba Team announcement for version
   2.2.8 at: [3]http://www.samba.org/samba/whatsnew/samba-2.2.8.html.

5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform
     * Solaris 9 with patch 114684-02 or later

   x86 Platform
     * Solaris 9 with patch 114685-02 or later

Change History

   28-May-2003
     * State: Resolved
     * Updated Contributing Factors and Resolution sections

   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 2000-2003 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved.


References

   1. http://www.kb.cert.org/vuls/id/298233
   2. http://www.kb.cert.org/vuls/id/267873
   3. http://www.samba.org/samba/whatsnew/samba-2.2.8.html

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UNIRAS wishes to acknowledge the contributions of Sun for the information
contained in this Briefing.
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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
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<End of UNIRAS Briefing>
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