CVE-2011-3607

Apache HTTP Server <2.0.64, 2.2.x - Privilege Escalation

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-3607.

AI-analyzed exploit summary This is a detailed technical analysis of CVE-2011-3607, an integer overflow vulnerability in Apache HTTP Server's mod_setenvif module. It explains the root cause, impact, and exploitation techniques, including ROP-based attacks and memory corruption via crafted .htaccess files.

Description

Integer overflow in 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, allows local users to gain privileges via a .htaccess file with a crafted SetEnvIf directive, in conjunction with a crafted HTTP request header, leading to a heap-based buffer overflow.

Exploits (1)

exploitdb WRITEUP

doslinux

https://www.exploit-db.com/exploits/41769

View Code ZIP pw:eip

This is a detailed technical analysis of CVE-2011-3607, an integer overflow vulnerability in Apache HTTP Server's mod_setenvif module. It explains the root cause, impact, and exploitation techniques, including ROP-based attacks and memory corruption via crafted .htaccess files.

Classification

Writeup 100%

Attack Type

Rce | Dos

Complexity

Complex

Reliability

Racy

Target: Apache HTTP Server 2.0.x to 2.0.64, 2.2.x to 2.2.21

No auth needed

Prerequisites: mod_setenvif enabled · ability to upload crafted .htaccess file

MITRE ATT&CK

T1190 - Exploit Public-Facing Application T1210 - Exploitation of Remote Services

devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (48)

Core 48

Core References

Mailing List vendor-advisory x_refsource_apple

http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html

Vendor Advisory vendor-advisory x_refsource_hp

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041

Exploit x_refsource_confirm

https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/811422

Exploit x_refsource_misc

http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/DemoExploit.html

Issue Tracking x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=750935

Mailing List vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=133294460209056&w=2

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/45793

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://securitytracker.com/id?1026267

Vendor Advisory x_refsource_confirm

http://support.apple.com/kb/HT5501

Various Sources x_refsource_confirm

http://www.fujitsu.com/global/support/software/security/products-f/interstage-201303e.html

Third Party Advisory mailing-list x_refsource_fulldisc

http://archives.neohapsis.com/archives/fulldisclosure/2011-11/0023.html

Exploit x_refsource_misc

http://www.halfdog.net/Security/2011/ApacheModSetEnvIfIntegerOverflow/

Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb

http://www.osvdb.org/76744

Mailing List vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=133494237717847&w=2

Vendor Advisory vendor-advisory x_refsource_mandriva

http://www.mandriva.com/security/advisories?name=MDVSA-2013:150

Third Party Advisory, VDB Entry vdb-entry x_refsource_xf

https://exchange.xforce.ibmcloud.com/vulnerabilities/71093

Vendor Advisory vendor-advisory x_refsource_mandriva

http://www.mandriva.com/security/advisories?name=MDVSA-2012:003

Mailing List vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=134987041210674&w=2

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2012-0543.html

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2012-0128.html

Vendor Advisory x_refsource_confirm

http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/50494

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2012-0542.html

Vendor Advisory x_refsource_confirm

http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/48551

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2012/dsa-2405