EnGarde: 'apache' mod_alias and mod_rewrite buffer overflow
Posted by LinuxSecurity.com Team   
EnGarde A buffer overflow in mod_alias and mod_rewrite was discovered in the Apache web server. This vulnerability may be exploited when a regular expression with more then nine captures is defined in either the httpd.conf or an .htaccess file.

+------------------------------------------------------------------------+
| Guardian Digital Security Advisory                   November 05, 2003 |
|  http://www.guardiandigital.com                       ESA-20031105-030 |
|                                                                        |
| Package: apache                                                        |
| Summary: buffer overflow in mod_alias and mod_rewrite.                 |
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  EnGarde Secure Linux is an enterprise class Linux platform engineered
  to enable corporations to quickly and cost-effectively build a complete
  and secure Internet presence while preventing Internet threats.

OVERVIEW
--------
  A buffer overflow in mod_alias and mod_rewrite was discovered in the
  Apache web server.  This vulnerability may be exploited when a regular
  expression with more then nine captures is defined in either the
  httpd.conf or an .htaccess file.

  The Common Vulnerabilities and Exposures project (cve.mitre.org) has
  assigned the name CAN-2003-0542 to this issue.

  Guardian Digital products affected by this issue include:

    EnGarde Secure Community v1.0.1
    EnGarde Secure Community 2
    EnGarde Secure Professional v1.1
    EnGarde Secure Professional v1.2
    EnGarde Secure Professional v1.5

  It is recommended that all users apply this update as soon as possible.

SOLUTION
--------
  Guardian Digital Secure Network subscribers may automatically update
  affected systems by accessing their account from within the Guardian
  Digital WebTool.

  To modify your GDSN account and contact preferences, please go to:

    https://www.guardiandigital.com/account/

  Below are MD5 sums for the updated EnGarde Secure Linux 1.0.1 packages:

    SRPMS/apache-1.3.27-1.0.34.src.rpm
      MD5 Sum: de09c2e541f756745bd447e66cf10db2

    i386/apache-1.3.27-1.0.34.i386.rpm
      MD5 Sum: b26bc323801dfec79b3e302a60465793

    i686/apache-1.3.27-1.0.34.i686.rpm
      MD5 Sum: a404d9a5c7f0cdd4f1bb6b32288c7fa3

REFERENCES
----------
  Guardian Digital's public key:
     http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY

  Apache's Official Web Site:
     http://httpd.apache.org/

  Guardian Digital Advisories:
     http://infocenter.guardiandigital.com/advisories/

  Security Contact: security@guardiandigital.com

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Author: Ryan W. Maple <ryan@guardiandigital.com>
Copyright 2003, Guardian Digital, Inc.