SGI Information for VU#206537

Apache vulnerable to DoS



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

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

Vendor References




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

- --------------
- --- 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

# /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

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/ | grep TIMSTAMP
[46]    TIMSTAMP    Jan 13 14:50:39 2003

%/usr/bin/elfdump -L /usr/mbase/asset_gateway/ | 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
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: 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:

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

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Version: 2.6.2


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