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AUSCERT External Security Bulletin Redistribution
ESB-2003.0372 -- SGI Security Advisory
Security Vulnerabilities in MediaBase Apache and PHP
20 May 2003
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AusCERT Security Bulletin Summary
---------------------------------
Product: Kasenna Mediabase
Publisher: SGI
Operating System: IRIX
Impact: Denial of Service
Execute Arbitrary Code/Commands
Provide Misleading Information
Access Required: Remote
CVE Names: CAN-2002-0839, CAN-2002-0840, CAN-2002-0843
Ref: ESB-2002.550
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______________________________________________________________________________
SGI Security Advisory
Title : Security Vulnerabilities in MediaBase Apache and PHP
Number : 20030502-01-I
Date : May 19, 2003
Reference: Kasenna Support Issue # 1095 and # 1330
Fixed in : Patches from Kasenna Support Website
______________________________________________________________________________
- - -----------------------
- - --- Issue Specifics ---
- - -----------------------
It's been reported that Kasenna Mediabase has insecure versions of
Apache and PHP.
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 with patches and in future releases of
MediaBase.
- - --------------
- - --- Impact ---
- - --------------
MediaBase is an optional product from Kasenna, and is not installed by
default on IRIX 6.5 systems.
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 6.5.16f
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 mediabase is installed, execute the following command:
% versions -b | grep mbase
I mbase_client 06/01/2000 WebFORCE MediaBase 2.1 - Client
I mbase_players 10/06/2000 SGI MediaBase 4.0.1 - Players packaged
for installation on server
I mbase_root 12/24/2000 SGI MediaBase 4.0.1 - Development ROOT
Files
I mbase_server 10/06/2000 SGI MediaBase 4.0.1 - MediaBase Server
Execution Environment
I mbase_server_spk1 12/24/2000 SGI MediaBase 4.0.1 - MediaBase Server
Service Pack 1
To determine if the version of Apache installed as part of MediaBase is
vulnerable, execute the following command:
% /usr/kasenna/apache/bin/httpd -v
Server version: Apache/1.3.14 (Unix)
Server built: Dec 20 2000 15:52:52
If the version shown (in this case 1.3.14) is lower than 1.3.27, then the
system is vulnerable.
To determine if the version of PHP installed as part of MediaBase is
vulnerable, execute the following commands:
%/usr/bin/elfdump -L /usr/mbase/asset_gateway/php_apache.so | grep TIMSTAMP
[46] TIMSTAMP Jan 13 14:50:39 2003
%/usr/bin/elfdump -L /usr/mbase/asset_gateway/php_mediabase.so | grep TIMSTAMP
[45] TIMSTAMP Jan 10 14:02:48 2003
If the value shown for "TIMSTAMP" is earlier than the ones shown, then the
system is vulnerable.
- - ----------------------------
- - --- Temporary Workaround ---
- - ----------------------------
There is no effective workaround available for these problems if MediaBase
is needed. SGI and Kasenna recommend installing the patches shown below
from the Kasenna website.
- - ----------------
- - --- Solution ---
- - ----------------
Kasenna MediaBase is an optional product, the system is vulnerable if
a vulnerable version of MediaBase and its associated Apache and PHP
components are installed. Please run the commands shown in the "Impact"
section above and install the patches if those commands show
the system to be vulnerable.
Kasenna has provided patches for these vulnerabilities. Our recommendation
is to install the patches provided by Kasenna.
To obtain the Kasenna MediaBase patches, go to http://support.kasenna.com/
and install the patches shown in support issue 1095 (apache) and 1033 (PHP).
- - ------------------------
- - --- Acknowledgments ----
- - ------------------------
SGI wishes to thank FIRST 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
security-info@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. 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
security-info@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-request@sgi.com
subscribe wiretap <YourEmailAddress such as aaanalyst@sgi.com >
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
security-info@sgi.com.
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.
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