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HexView Security Advisory 2003-08-03.01

HexView Security Advisory 2003-08-03.01
Posted Aug 26, 2003
Authored by HexView, SGI Security Coordinator | Site sgi.com

SGI Security Advisory 20030803-01-P - A vulnerability has been reported by sendmail.org that the 8.12.8 and earlier releases shipped with a potential problem in DNS mapping that could lead to a remote denial or service or root compromise. Relatedd CVE Number: CVE-2003-0688.

tags | advisory, remote, root
SHA-256 | f599f483c03b2a7dbaa048e9abd60ad17327c2a14fc6add6523e23542a45abb1

HexView Security Advisory 2003-08-03.01

Change Mirror Download

SGI Security Advisory

Title : Sendmail DNS Map Vulnerability
Number : 20030803-01-P
Date : August 25, 2003
Reference: CVE CAN-2003-0688
Reference: SGI BUG 898396
Fixed in : IRIX 6.5.22 or patch 5287

SGI provides this information freely to the SGI user community for its
consideration, interpretation, implementation and use. SGI recommends that
this information be acted upon as soon as possible.

SGI provides the information in this Security Advisory on an "AS-IS" basis
only, and disclaims all warranties with respect thereto, express, implied
or otherwise, including, without limitation, any warranty of merchantability
or fitness for a particular purpose. In no event shall SGI be liable for
any loss of profits, loss of business, loss of data or for any indirect,
special, exemplary, incidental or consequential damages of any kind arising
from your use of, failure to use or improper use of any of the instructions
or information in this Security Advisory.

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

It's been reported by sendmail.org that there is a potential problem in the
sendmail 8.12 series with respect to DNS maps in sendmail 8.12.8 and earlier
sendmail 8.12.x versions: http://www.sendmail.org/dnsmap1.html

SGI ships sendmail 8.12.5 with IRIX 6.5.19 and later. The bug did not exist
in versions before 8.12 as the DNS map type is new to 8.12.x versions.
This bug could potentially be exploited to cause a Denial of Service.
There may be a possibility of using it to gain remote root access.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0688 to this issue:

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 patches and in future releases of IRIX.

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

The sendmail binary is installed by default on IRIX 6.5 systems as part of

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 6.5.19f

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.

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

There is no effective workaround available for these problems if you use dns
maps with sendmail. SGI recommends either upgrading to IRIX 6.5.22 (when
available), or installing the appropriate patch from the listing below.

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

SGI has provided a series of patches for these vulnerabilities. Our
recommendation is to upgrade to IRIX 6.5.22 (when available), or install the
appropriate patch.

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 no
IRIX 6.5.1 no
IRIX 6.5.2 no
IRIX 6.5.3 no
IRIX 6.5.4 no
IRIX 6.5.5 no
IRIX 6.5.6 no
IRIX 6.5.7 no
IRIX 6.5.8 no
IRIX 6.5.9 no
IRIX 6.5.10 no
IRIX 6.5.11 no
IRIX 6.5.12 no
IRIX 6.5.13 no
IRIX 6.5.14 no
IRIX 6.5.15 no
IRIX 6.5.16 no
IRIX 6.5.17 no
IRIX 6.5.18 no
IRIX 6.5.19 yes 5287 Notes 2 & 3
IRIX 6.5.20 yes 5287 Notes 2 & 3
IRIX 6.5.21 yes 5287 Notes 2 & 3
IRIX 6.5.22 no


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) Upgrade to IRIX 6.5.22 (when available) or install the patch.

##### Patch File Checksums ####
Filename: README.patch.5287
Algorithm #1 (sum -r): 03461 10 README.patch.5287
Algorithm #2 (sum): 38994 10 README.patch.5287
MD5 checksum: 727E74B176D101AA4DE1E5F816E86AF2

Filename: patchSG0005287
Algorithm #1 (sum -r): 39412 4 patchSG0005287
Algorithm #2 (sum): 5197 4 patchSG0005287
MD5 checksum: 6A69EEF8FC02D549D110A64F8DEDA98C

Filename: patchSG0005287.eoe_src
Algorithm #1 (sum -r): 18481 378 patchSG0005287.eoe_src
Algorithm #2 (sum): 2432 378 patchSG0005287.eoe_src
MD5 checksum: EBDE27E3AF773E0EA6D2884A88501B71

Filename: patchSG0005287.eoe_sw
Algorithm #1 (sum -r): 34932 1104 patchSG0005287.eoe_sw
Algorithm #2 (sum): 48296 1104 patchSG0005287.eoe_sw
MD5 checksum: 0DE3B5C3BE9FE1DE0E0F022BB2FCDF14

Filename: patchSG0005287.idb
Algorithm #1 (sum -r): 56703 4 patchSG0005287.idb
Algorithm #2 (sum): 23907 4 patchSG0005287.idb
MD5 checksum: 6A25934457046F7EDFD84A9CE39C9623

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

SGI wishes to thank sendmail.org 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

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

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:

SGI patches and RPMs for Linux can be found at:

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

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:

IRIX 6.5 Software Update CDs can be obtained from:

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

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


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

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

% mail wiretap-request@sgi.com
subscribe wiretap <YourEmailAddress such as aaanalyst@sgi.com >

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 http://www.sgi.com/support/security/ .


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
security-alert@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.

Version: 2.6.2

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