Apache Prefork MPM Vulnerabilities
by PSNC Security Team - Monday, 2 July 2007.
This case study is a result of source code analysis of Apache httpd server MPM modules. The main goal of this document is to show what may be done by an attacker who has the possibility of running arbitrary code in the context of the worker process (WP).

The work has been concentrated on verifying whether (and to which extent) it is secure to run an external code in the worker process context. Such code may be provided through appropriate functions of script languages attached as a module (like dl(), dlopen()) or as a result of running an exploit of one of vulnerabilities found in Apache modules (e.g. Integer Overflow in chunk_split() function). In order to simulate running an external code in the WP context we use dl() function from mod_php module.

Download the article in PDF format here.

Spotlight

Operation Pawn Storm: Varied targets and attack vectors, next-level spear-phishing tactics

Posted on 23 October 2014.  |  Targets of the spear phishing emails included staff at the Ministry of Defense in France, in the Vatican Embassy in Iraq, military officials from a number of countries, and more.


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