Users login

Create an account »

JOIN XATRIX

Users login

Home » Hacking News » SGI 20030403-01-P: samba buffer overflow

SGI 20030403-01-P: samba buffer overflow

by Nikola Strahija on April 14th, 2003 A vulnerability has been found in Samba that can lead to buffer overflow and allow remote attackers to gain root privileges.


-----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________
SGI Security Advisory

Title : Samba Security Vulnerability
Number : 20030403-01-P
Date : April 9, 2003
Reference: CVE CAN-2003-0201
Reference: SGI BUG 886996
Fixed in : Samba 2.2.8a or patch 5065
______________________________________________________________________________

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

It's been reported that there is a vulnerability in Samba versions up to and
including Samba 2.2.8. This vulnerability, if exploited correctly, leads to
an anonymous user gaining root access on a Samba serving system.

See: http://master.samba.org/samba/samba.html (Samba News 7 Apr, 2003)
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0201

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 future releases of Samba and with a
patch for SGI's Samba 2.2.8.


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

Samba for Irix is not installed by default on IRIX 6.5 systems. It is an
optional product that can be purchased and installed as "samba_irix".

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

# /bin/uname -R

That will return a result similar to the following:

# 6.5 6.5.19f

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 samba_irix.man 07/02/2002 Samba Online Documentation
I samba_irix.man.doc 07/02/2002 Samba 2.2.4 Documentation
I samba_irix.man.manpages 07/02/2002 Samba 2.2.4 Man Page
I samba_irix.man.relnotes 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
2.2.8a, then the system is vulnerable.


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

Though it is possible to limit exposure by filtering what IPs can talk to
your Samba server, there is no effective workaround to fully address these
problems. SGI recommends upgrading to Samba 2.2.8 and installing patch 5065.


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

SGI has provided a patch for Samba 2.2.8 for this vulnerability. Our
recommendation is to upgrade to Samba 2.2.8 and install the patch.

Patch 5065 only applies to the samba_irix 2.2.8 package.
This patch will not apply to the freeware versions of samba available from:
http://freeware.sgi.com/ , http://www.samba.org/ and
http://master.samba.org/samba/ftp/Binary_Packages/IRIX/


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 5065 Notes 2 & 3
IRIX 6.5.1 yes 5065 Notes 2 & 3
IRIX 6.5.2 yes 5065 Notes 2 & 3
IRIX 6.5.3 yes 5065 Notes 2 & 3
IRIX 6.5.4 yes 5065 Notes 2 & 3
IRIX 6.5.5 yes 5065 Notes 2 & 3
IRIX 6.5.6 yes 5065 Notes 2 & 3
IRIX 6.5.7 yes 5065 Notes 2 & 3
IRIX 6.5.8 yes 5065 Notes 2 & 3
IRIX 6.5.9 yes 5065 Notes 2 & 3
IRIX 6.5.10 yes 5065 Notes 2 & 3
IRIX 6.5.11 yes 5065 Notes 2 & 3
IRIX 6.5.12 yes 5065 Notes 2 & 3
IRIX 6.5.13 yes 5065 Notes 2 & 3
IRIX 6.5.14 yes 5065 Notes 2 & 3
IRIX 6.5.15 yes 5065 Notes 2 & 3
IRIX 6.5.16 yes 5065 Notes 2 & 3
IRIX 6.5.17 yes 5065 Notes 2 & 3
IRIX 6.5.18 yes 5065 Notes 2 & 3
IRIX 6.5.19 yes 5065 Notes 2 & 3
IRIX 6.5.20 yes 5065 Notes 2 & 3

NOTES

1) This version of the IRIX operating has been retired. Upgrade to an
actively supported IRIX operating system. See http://support.sgi.com
for more information.

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

3) If a version of Samba prior to 2.2.8a is installed, the system is
vulnerable and you should upgrade to Samba 2.2.8 and install the patch.


##### Patch File Checksums ####

The actual patch will be a tar file containing the following files:

Filename: README.patch.5065
Algorithm #1 (sum -r): 52833 8 README.patch.5065
Algorithm #2 (sum): 19672 8 README.patch.5065
MD5 checksum: FFB8A9F3304A2C9A793C8C8888E4CBD6

Filename: patchSG0005065
Algorithm #1 (sum -r): 21712 2 patchSG0005065
Algorithm #2 (sum): 7400 2 patchSG0005065
MD5 checksum: 2A80FB9188A81306441E0530200EC184

Filename: patchSG0005065.idb
Algorithm #1 (sum -r): 65085 4 patchSG0005065.idb
Algorithm #2 (sum): 64041 4 patchSG0005065.idb
MD5 checksum: 2A5195E64FC6F093B733CA7C22A7B90C

Filename: patchSG0005065.samba_irix_src
Algorithm #1 (sum -r): 02420 284 patchSG0005065.samba_irix_src
Algorithm #2 (sum): 29510 284 patchSG0005065.samba_irix_src
MD5 checksum: 2E8049C4A7108726D8BF15026BCDE687

Filename: patchSG0005065.samba_irix_sw
Algorithm #1 (sum -r): 16886 2400 patchSG0005065.samba_irix_sw
Algorithm #2 (sum): 34027 2400 patchSG0005065.samba_irix_sw
MD5 checksum: 457451125CFBACF454CE6C990E5CECC0


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

SGI wishes to thank The Samba Team and the users of the Internet Community
at large for their assistance in this matter.


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

SGI Security Advisories can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/advisories/

SGI Security Patches can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/patches/

SGI patches for IRIX can be found at the following patch servers:
http://support.sgi.com/ and ftp://patches.sgi.com/

SGI freeware updates for IRIX can be found at:
http://freeware.sgi.com/

SGI fixes for SGI open sourced code can be found on:
http://oss.sgi.com/projects/

SGI patches and RPMs for Linux can be found at:
http://support.sgi.com/

SGI patches for Windows NT or 2000 can be found at:
http://support.sgi.com/

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at:
http://support.sgi.com/ and ftp://patches.sgi.com/support/patchset/

IRIX 6.5 Maintenance Release Streams can be found at:
http://support.sgi.com/

IRIX 6.5 Software Update CDs can be obtained from:
http://support.sgi.com/

The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com. Security advisories and patches are located under the URL
ftp://patches.sgi.com/support/free/security/

For security and patch management reasons, ftp.sgi.com (mirrors
patches.sgi.com 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
[email protected]

------oOo------

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
patches.sgi.com. Security advisories and patches are located under the URL
ftp://patches.sgi.com/support/free/security/

The SGI Security Headquarters Web page is accessible at the URL:
http://www.sgi.com/support/security/

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

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

------oOo------

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
(http://www.sgi.com/support/security/wiretap.html) or by sending email to
SGI as outlined below.

% mail [email protected]
subscribe wiretap
end
^d

In the example above, 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.


------oOo------

SGI provides a comprehensive customer World Wide Web site. This site is
located at http://www.sgi.com/support/security/ .

------oOo------

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

For reporting *NEW* SGI security issues, email can be sent to
[email protected] 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.

-----BEGIN PGP SIGNATURE-----
Version: 2.6.2

iQCVAwUBPpRcUrQ4cFApAP75AQEKMQP+Pp8FTIURkyimzflGu7wRpzKkBtTRBdW7
7XiZXWzVqM9Hy46uFkMme5+C6sA3+ah30tx6JZaYJb7mL8wSRMvsitQXF48Bl4Zy
c3rJp7edEpxbhh+c2Wj4xYRLMolRX/lSZ8qAdmZcpOvWaUvTMOZlR6SmoqM1xp5B
JtSTN9YbgG4=
=Tc6B
-----END PGP SIGNATURE-----


Newsletter signup

Signup to our monthly newsletter and stay in touch with IT news!

Free E-books

We've got ebooks! But they're not online. :( Please give us a few days to bring downloads back.

Contact

Have something to say or just wanna drop us a line? Please keep this in mind: to spam, we reply with spam.

Contact us »