Heap-based buffer overflow in Apache HTTP Server - CVE-2011-3607

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Main Vulnerability Database Vulnerabilities #VU32830

Heap-based buffer overflow in Apache HTTP Server - CVE-2011-3607

Published: November 8, 2011 / Updated: July 29, 2020


Vulnerability identifier: #VU32830
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2011-3607
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability: Public exploit is available
Vendor: Apache Foundation
Affected software:
Apache HTTP Server

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in 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,. A remote attacker can use a .htaccess file with a crafted SetEnvIf directive to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


How to mitigate CVE-2011-3607

Update to version 2.0.65.

Sources