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

Bash Shellshock bug: More attacks, more patches

Posted on 29 September 2014.  |  As vendors scramble to issue patches for the GNU Bash Shellshock bug and companies rush to implement them, attackers around the world are probing systems for the hole it opens.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  

DON'T
MISS

Tue, Sep 30th
    COPYRIGHT 1998-2014 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //