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AUSCERT External Security Bulletin Redistribution
ESB-2002.166 -- Compaq Security Advisory (SSRT0817, SSRT0821)
Potential Security Vulnerabilities with Compaq Secure Web Server
(PHP and apache/mod_ssl)
5 April 2002
AusCERT Security Bulletin Summary
Product: Compaq Secure Web Server (CSWS)
Operating System: OpenVMS V7.1-2 or later
TRU64 UNIX V5.0a or later
Impact: Execute Arbitrary Code/Commands
Access Required: Remote
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TITLE: (SSRT0817, SSRT0821) Potential Security Vulnerabilities
with Compaq Secure Web Server (PHP and apache/mod_ssl)
Posted at http://ftp.support.compaq.com/patches/.new/security.shtml
NOTICE: There are no restrictions for distribution of this Bulletin
provided that it remains complete and intact.
RELEASE DATE: March 2002
Compaq Computer Corporation
Software Security Response Team
X-REFERENCE: CVE Candidate - PHP (CAN-2002-0081) ,
Compaq was recently notified of two potential vulnerabilities
that impact Compaq's distributed Secure Web Server (CSWS) for
OpenVMS and TRU64 UNIX.
PHP (Hypertext Preprocessor scripting language). PHP does not
perform proper bounds checking on in functions related to
Form-based File Uploads in HTML to decode MIME encoded files.
This potential overflow vulnerability may allow arbitrary code
to be executed.
Apache/mod_ssl session cache management routines use an unchecked
buffer that could potentially allow an overflow of a session cache
buffer. Thispotential vulnerability may allow arbitrary code to be
CSWS (SSRT0817) PHP (SSRT0821)
later CSWS_PHP V1.0 CSWS V1.0-1,
TRU64 UNIX V5.0A
later CSWS V5.5.2 CSWS V5.5.2
*NOTE:These reported potential vulnerabilities do not
have an impact to the base operating system in the form
of elevated permissions or privileges.
Himalaya Web Products
Compaq Management Software Web Products
Compaq has corrected both problems and created patches that are now
available for CSWS (Compaq Secure Web Server) for OpenVMS and TRU64
CSWS for OpenVMS V7.1-2 or later:
A Compaq Secure Web Server security update kit is available for
INSTALLED VERSION UPDATE KIT
CSWS_PHP 1.0 CSWS_PHP10_UPDATE V1.0
NOTE: (SSRT0817) PHP - For OpenVMS - if upgrading is not
possible or a patch cannot be applied immediately, the
potential PHP overflow vulnerability may be minimized by
adding the following line to MOD_PHP.CONF file:
PHP_FLAG file_uploads OFF
This will prevent using fileuploads, which may not be
an acceptable short-term solution.
Installed Version Update Kit
CSWS V1.2 CSWS12_UPDATE V1.0
CSWS V1.1-1 CSWS111_UPDATE V1.0
CSWS V1.0-1 CSWS101_UPDATE V1.0
TRU64 UNIX for V5.0a or later:
A Compaq Secure Web Server security update kit is available for
select and install the CSWS (Compaq Secure Web Server) kit V5.8.2
Installed Version Install Updated Server Kit
CSWS V5.5.2 CSWS V5.8.2
After completing the update, Compaq strongly recommends that you
perform an immediate backup of your system disk so that any
subsequent restore operations begin with updated software. Otherwise,
you must reapply the patch after a future restore operation. Also, if
at some future time you upgrade your system to a later patch version,
you may need to reapply the appropriate patch.
For further information, contact Compaq Global Services.
To subscribe to automatically receive future Security Advisories from
the Compaq's Software Security Response Team via electronic mail:
To report a potential security vulnerability with any Compaq
supported product, send email mailto:firstname.lastname@example.org
Compaq appreciates your cooperation and patience. We regret
any inconvenience applying this information may cause. As always,
Compaq urges you to periodically review your system management and
security procedures. Compaq will continue to review and enhance the
security features of its products and work with customers to maintain
and improve the security and integrity of their systems.
"Compaq is broadly distributing this Security Advisory to notify all
users of Compaq products of the important security information
contained in this Advisory. Compaq recommends that all users
determine the applicability of this information to their individual
situations and take appropriate action. Compaq does not warrant that
this information is necessarily accurate or complete for all user
situations and, consequently, Compaq will not be responsible for any
damages resulting from user's use or disregard of the information
provided in this Advisory."
Copyright 2002 Compaq Information Technologies Group, L.P. Compaq
shall not be liable for technical or editorial errors or omissions
contained herein. The information in this document is subject to
change without notice. Compaq and the names of Compaq products
referenced herein are, either, trademarks and/or service marks or
registered trademarks and/or service marks of Compaq Information
Technologies Group, L.P. Other product and company names mentioned
herein may be trademarks and/or service marks of their respective
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