CVE-2011-4415
Apache HTTP Server 2.0.x-2.0.64 and 2.2.x-2.2.21 - Denial of Service via mod_setenvif SetEnvIf Directive
Title source: llmExploitation Summary
EIP tracks 1 public exploit for CVE-2011-4415. PoCs published by halfdog.
AI-analyzed exploit summary The document describes an integer overflow vulnerability in Apache HTTP Server's mod_setenvif module, leading to buffer overflow and potential RCE or DoS. It outlines exploit techniques but does not include actual exploit code.
Description
The ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, does not restrict the size of values of environment variables, which allows local users to cause a denial of service (memory consumption or NULL pointer dereference) via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a crafted HTTP request header, related to (1) the "len +=" statement and (2) the apr_pcalloc function call, a different vulnerability than CVE-2011-3607.
Exploits (1)
The document describes an integer overflow vulnerability in Apache HTTP Server's mod_setenvif module, leading to buffer overflow and potential RCE or DoS. It outlines exploit techniques but does not include actual exploit code.