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CVE Database


Impact: Low
Public: 2011-11-02
Bugzilla: 769844: CVE-2011-3607 httpd: ap_pregsub Integer overflow to buffer overflow


The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2011-3607 from the MITRE CVE dictionary and NIST NVD.


The Red Hat Security Response Team has rated this issue as moderate security
impact. A future update may address this issue. For additional information,
refer to the Issue Severity Classification:

CVSS v2 metrics

Base Score: 4.4
Base Metrics: AV:L/AC:M/Au:N/C:P/I:P/A:P
Access Vector: Local
Access Complexity: Medium
Authentication: None
Confidentiality Impact: Partial
Integrity Impact: Partial
Availability Impact: Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux version 5 (httpd) RHSA-2012:0323 February 21, 2012
Red Hat Enterprise Linux version 6 (httpd) RHSA-2012:0128 February 13, 2012
Red Hat JBoss Web Server 1.0 for RHEL 6 Server (httpd) RHSA-2012:0542 May 07, 2012
Red Hat JBoss Web Server 1.0 (httpd) RHSA-2012:0543 May 07, 2012
Red Hat JBoss Web Server 1.0 for RHEL 5 Server (httpd) RHSA-2012:0542 May 07, 2012

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.