Samba Security Vulnerability on IRIX

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SGI Security Coordinator

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Dec 8, 2004, 1:24:54 PM12/8/04
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______________________________________________________________________________

SGI Security Advisory

Title : Samba Security Vulnerability
Number : 20041201-01-P
Date : December 7, 2004
Reference: CAN-2004-0807, CAN-2004-0882 & CAN-2004-0930
Reference: SGI BUGS 925753, 925907 & 925754
Fixed in : Patch 5798 for Samba 3.0.7
______________________________________________________________________________

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

It has been reported that there are multiple vulnerabilities in Samba a
ffecting Samba 3.0.x <= 3.0.7. There is a potential exploit and
denial of service against Samba.

Patch 5798 patch applies ONLY to Samba 3.0.7. Customers with older
Samba versions should upgrade to 3.0.7 and apply this patch.

See: http://www.samba.org/samba/ftp/patches/security/

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 3.0.7.


- --------------
- --- 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 6.5.22m

The first number ("6.5") is the release name, the second ("6.5.22" 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 10/06/2004 Samba 3.0.7 for IRIX
I samba_irix.books 10/06/2004 Samba Online Books
I samba_irix.books.Samba_IAG 10/06/2004 Samba for IRIX(R) Installation
and Administration Guide
I samba_irix.man 10/06/2004 Samba Online Documentation
I samba_irix.man.doc 10/06/2004 Samba 3.0.7 Documentation and Examples
I samba_irix.man.manpages 10/06/2004 Samba 3.0.7 Man Pages
I samba_irix.man.relnotes 10/06/2004 Samba 3.0.7 Release Notes
I samba_irix.src 10/06/2004 Samba Source Code
I samba_irix.src.samba 10/06/2004 Samba 3.0.7 Source Code
I samba_irix.sw 10/06/2004 Samba Execution Environment
I samba_irix.sw.base 10/06/2004 Samba 3.0.7 Execution Environment
I samba_irix.sw.pcp 10/06/2004 Samba 3.0.7 Performance Co-Pilot PMDA

If the result is similar to the above and the version shown is Samba
3.0.X <= 3.0.7 then the system is vulnerable.
Note: This will show the same thing after the patch is installed as well.


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

SGI recommends installing patch 5798 on IRIX system running 6.5.22
or higher with Samba 3.0.7.


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

SGI has provided a patch for Samba 3.0.7 for this vulnerability. Our
recommendation is to the patch.


OS Version Vulnerable? Patch # Other Actions
---------- ----------- ------- -------------
IRIX 6.5.22 yes 5798
IRIX 6.5.23 yes 5798
IRIX 6.5.24 yes 5798
IRIX 6.5.25 yes 5798
IRIX 6.5.26 yes 5798


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

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

Filename: README.patch.5798
Algorithm #1 (sum -r): 01423 9 README.patch.5798
Algorithm #2 (sum): 17204 9 README.patch.5798
MD5 checksum: 5F992013F92C4D839A2A0535500E45F8

Filename: patch5798.chksums.only
Algorithm #1 (sum -r): 61820 1 patch5798.chksums.only
Algorithm #2 (sum): 13034 1 patch5798.chksums.only
MD5 checksum: A01DBF5F912AF93FC5F555D21AEDF97C

Filename: patch5798.pgp.and.chksums
Algorithm #1 (sum -r): 34452 1 patch5798.pgp.and.chksums
Algorithm #2 (sum): 36394 1 patch5798.pgp.and.chksums
MD5 checksum: 39565B3688B0A75A0B2A1BA0EA120FEB

Filename: patchSG0005798
Algorithm #1 (sum -r): 08607 2 patchSG0005798
Algorithm #2 (sum): 60109 2 patchSG0005798
MD5 checksum: 430C10944864C936725393BFC1FB4222

Filename: patchSG0005798.idb
Algorithm #1 (sum -r): 19804 1 patchSG0005798.idb
Algorithm #2 (sum): 39069 1 patchSG0005798.idb
MD5 checksum: CF5B9CDA322A0128272F2123857E3CCD

Filename: patchSG0005798.samba_irix_sw
Algorithm #1 (sum -r): 50381 3544 patchSG0005798.samba_irix_sw
Algorithm #2 (sum): 46386 3544 patchSG0005798.samba_irix_sw
MD5 checksum: 0DDFC7999E33682ECBBC27C5BF8DC2FB

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

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


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

Patches are available via the web, anonymous FTP and from your SGI
service/support provider.

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/ or
http://oss.sgi.com/projects/sgilinux-combined/download/security-fixes/

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 (216.32.174.211). 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
securi...@sgi.com.

------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 (216.32.174.211). 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
securi...@sgi.com.

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 wiretap...@sgi.com
subscribe wiretap <YourEmailAddress>
end
^d

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.


------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 securi...@sgi.com.

For reporting *NEW* SGI security issues, email can be sent to
securit...@sgi.com 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.

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