Topic: ModSecurity 1.7.4 for Apache 2.x remote off-by-one overflow Severity: Average Vendor URL: http://www.modsecurity.org Advisory URL: http://www.s-quadra.com/advisories/Adv-20040315.txt Release date: 15 Mar 2004
1. DESCRIPTION
ModSecurity is an open source intrusion detection and prevention engine for web applications. It supports both branches of the Apache web server. Please visit http://www.modsecurity.org for more information about ModSecurity.
2. DETAILS
When directive "SecFilterScanPost" is enabled, ModSecurity checks incoming POST payloads. In this mode Apache 2.x version of ModSecurity is vulnerable to off-by-one overflow which could be potentially used by a remote attacker to execute arbitrary code on a target's web server.
3. FIX INFORMATION
S-Quadra alerted Ivan Ristic (ModSecurity developer) on this issue 09 Feb 2004. Mod_security 1.7.5 which fixes this issue is available.
4. CREDITS
Evgeny Legerov <e.legerov@s-quadra.com> is responsible for discovering this issue.
5. ABOUT
S-Quadra dedicates its substantial knowledge and resources to managing clients' IT security risks. S-Quadra audits and protection for software and networks implement pioneering methods and ground-breaking technologies.
S-Quadra Advisory #2004-03-15
