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Apache "mod_include" Privilege Escalation Vulnerability
Secunia Advisory: SA12898
Release Date: 2004-10-22
Last Update: 2005-10-14
Popularity: 19,910 views

Critical:
Less critical
Impact: Privilege escalation
Where: Local system
Solution Status: Vendor Patch

Software:Apache 1.3.x

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CVE reference:CVE-2004-0940


Description:
Crazy Einstein has discovered a vulnerability in Apache, which can be exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to a boundary error in the "get_tag()" function of the "mod_include" module. This can be exploited to cause a buffer overflow when a specially crafted document with malformed server-side includes is requested through a HTTP session.

Successful exploitation can lead to execution of arbitrary code with escalated privileges, but requires that server-side includes (SSI) is enabled.

The vulnerability has been confirmed on version 1.3.31. Other versions may also be affected.

Solution:
Update to version 1.3.33.
http://httpd.apache.org/download.cgi

Provided and/or discovered by:
Crazy Einstein

Changelog:
2004-10-22: Updated "Solution" section.
2004-11-05: Updated "Solution" section.
2005-10-14: Added link to "Original Advisory".

Original Advisory:
Apache.org:
http://www.apache.org/dist/httpd/Announcement1.3.html


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