SGI Information for VU#958321

Samba contains a remotely exploitable stack buffer overflow



Vendor Statement


                         SGI Security Advisory

Title    : Samba Security Vulnerability
Number   : 20021204-01-I
Date     : December 5, 2002
Reference: CVE CAN-2002-1318
Reference: SGI BUG 874162
Fixed in : Samba v2.2.7

- -----------------------
- --- Issue Specifics ---
- -----------------------

It's been reported that versions of Samba prior to 2.2.7 have a security
vulnerability that could potentially allow an attacker to gain root access
on the target machine.  The word "potentially" is used because there
is no known exploit of this bug.  SGI has not found one, nor has the Samba
group found one.  Nevertheless, the vulnerability is considered serious.

See for additional

This vulnerability was assigned the following CVE candidate:

SGI has investigated the issue and recommends the following steps for
neutralizing the exposure.  It is HIGHLY RECOMMENDED that these measures be
implemented on ALL vulnerable SGI systems.

These issues have been corrected in Samba version 2.2.7.

- --------------
- --- Impact ---
- --------------

Samba is an optional product, and is not installed by default on IRIX 6.5

To determine the version of IRIX you are running, execute the following

  # /bin/uname -R

That will return a result similar to the following:

  # 6.5 6.5.16f

The first number ("6.5") is the release name, the second ("6.5.16f" in this
case) is the extended release name.  The extended release name is the
"version" we refer to throughout this document.

To see if samba is installed, execute the following command:

% versions samba_irix
I = Installed, R = Removed

   Name                 Date        Description

   I  samba_irix           07/02/2002  Samba 2.2.4 for IRIX
  I       07/02/2002  Samba Online Documentation
  I   07/02/2002  Samba 2.2.4 Documentation
  I  07/02/2002  Samba 2.2.4 Man Page
  I  07/02/2002  Samba 2.2.4 Release Notes
  I  samba_irix.src       07/02/2002  Samba Source Code
  I  samba_irix.src.samba 07/02/2002  Samba 2.2.4 Source Code
  I  samba_irix.sw        07/02/2002  Samba Execution Environment
  I  samba_irix.sw.base   07/02/2002  Samba 2.2.4 Execution Environment

If the result is similar to the above and the version shown is less than
2.2.7, then the system is vulnerable.

- ----------------------------
- --- Temporary Workaround ---
- ----------------------------

There is no effective workaround available for these problems if Samba is
required.  SGI recommends upgrading to Samba version 2.2.7.

- ----------------
- --- Solution ---
- ----------------

SGI has provided an instable version of Samba for this vulnerability. Our
recommendation is to upgrade to Samba version 2.2.7.

Samba 2.2.7 can be downloaded from or

For customers who have purchased the SGI supported version of Samba,
please contact your SGI Support Representative and request part
number 812-0893-008 -- Samba 2.2.7 for IRIX on CD.

   OS Version     Vulnerable?     Patch #      Other Actions
  ----------     -----------     -------      -------------
  IRIX 3.x        unknown                     Note 1
  IRIX 4.x        unknown                     Note 1
  IRIX 5.x        unknown                     Note 1
  IRIX 6.0.x      unknown                     Note 1
  IRIX 6.1        unknown                     Note 1
  IRIX 6.2        unknown                     Note 1
  IRIX 6.3        unknown                     Note 1
  IRIX 6.4        unknown                     Note 1
  IRIX 6.5          yes                       Notes 2 & 3
  IRIX 6.5.1        yes                       Notes 2 & 3
  IRIX 6.5.2        yes                       Notes 2 & 3
  IRIX 6.5.3        yes                       Notes 2 & 3
  IRIX 6.5.4        yes                       Notes 2 & 3
  IRIX 6.5.5        yes                       Notes 2 & 3
  IRIX 6.5.6        yes                       Notes 2 & 3
  IRIX 6.5.7        yes                       Notes 2 & 3
  IRIX 6.5.8        yes                       Notes 2 & 3
  IRIX 6.5.9        yes                       Notes 2 & 3
  IRIX 6.5.10       yes                       Notes 2 & 3
  IRIX 6.5.11       yes                       Notes 2 & 3
  IRIX 6.5.12       yes                       Notes 2 & 3
  IRIX 6.5.13       yes                       Notes 2 & 3
  IRIX 6.5.14       yes                       Notes 2 & 3
  IRIX 6.5.15       yes                       Notes 2 & 3
  IRIX 6.5.16       yes                       Notes 2 & 3
  IRIX 6.5.17       yes                       Notes 2 & 3
  IRIX 6.5.18       yes                       Notes 2 & 3


     1) This version of the IRIX operating has been retired. Upgrade to an
       actively supported IRIX operating system.  See for more

     2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your
       SGI Support Provider or URL:

     3) This version of IRIX is vulnerable if a version of Samba prior to
       2.2.7 is installed.  Please install Samba 2.2.7.

- ------------------------
- --- Acknowledgments ----
- ------------------------

SGI wishes to thank Steve Langasek, Eloy Paris, the Samba Group and the
users of the Internet Community at large for their assistance in this

- -------------
- --- Links ---
- -------------

SGI Security Advisories can be found at: and

SGI Security Patches can be found at: and

SGI patches for IRIX can be found at the following patch servers: and

SGI freeware updates for IRIX can be found at:

SGI fixes for SGI open sourced code can be found on:

SGI patches and RPMs for Linux can be found at: or

SGI patches for Windows NT or 2000 can be found at:

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at: and

IRIX 6.5 Maintenance Release Streams can be found at:

IRIX 6.5 Software Update CDs can be obtained from:

The primary SGI anonymous FTP site for security advisories and patches is (  Security advisories and patches are
located under the URL

For security and patch management reasons, (mirrors security FTP repository) lags behind and does not do a
real-time update.

- -----------------------------------------
- --- SGI Security Information/Contacts ---
- -----------------------------------------

If there are questions about this document, email can be sent to


SGI provides security information and patches for use by the entire SGI
community.  This information is freely available to any person needing the
information and is available via anonymous FTP and the Web.

The primary SGI anonymous FTP site for security advisories and patches is (  Security advisories and patches are
located under the URL

The SGI Security Headquarters Web page is accessible at the URL:

For issues with the patches on the FTP sites, email can be sent to

For assistance obtaining or working with security patches, please
contact your SGI support provider.


SGI provides a free security mailing list service called wiretap and
encourages interested parties to self-subscribe to receive (via email) all
SGI Security Advisories when they are released. Subscribing to the mailing
list can be done via the Web
( or by sending email to
SGI as outlined below.

% mail
subscribe wiretap <YourEmailAddress such as >

In the example above, <YourEmailAddress> is the email address that you wish
the mailing list information sent to.  The word end must be on a separate
line to indicate the end of the body of the message. The control-d (^d) is
used to indicate to the mail program that you are finished composing the
mail message.


SGI provides a comprehensive customer World Wide Web site. This site is
located at .


If there are general security questions on SGI systems, email can be sent to

For reporting *NEW* SGI security issues, email can be sent to or contact your SGI support provider.  A support
contract is not required for submitting a security report.

     This information is provided freely to all interested parties
     and may be redistributed provided that it is not altered in any
     way, SGI is appropriately credited and the document retains and
     includes its valid PGP signature.

Version: 2.6.2


Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References



The CERT/CC has no additional comments at this time.

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