Apache 2.2.x < 2.2.22 Multiple Vulnerabilities

medium Nessus Plugin ID 57791


The remote web server is affected by multiple vulnerabilities.


According to its banner, the version of Apache 2.2.x installed on the remote host is prior to 2.2.22. It is, therefore, potentially affected by the following vulnerabilities :

- When configured as a reverse proxy, improper use of the RewriteRule and ProxyPassMatch directives could cause the web server to proxy requests to arbitrary hosts.
This could allow a remote attacker to indirectly send requests to intranet servers.
(CVE-2011-3368, CVE-2011-4317)

- A heap-based buffer overflow exists when mod_setenvif module is enabled and both a maliciously crafted 'SetEnvIf' directive and a maliciously crafted HTTP request header are used. (CVE-2011-3607)

- A format string handling error can allow the server to be crashed via maliciously crafted cookies.

- An error exists in 'scoreboard.c' that can allow local attackers to crash the server during shutdown.

- An error exists in 'protocol.c' that can allow 'HTTPOnly' cookies to be exposed to attackers through the malicious use of either long or malformed HTTP headers. (CVE-2012-0053)

- An error in the mod_proxy_ajp module when used to connect to a backend server that takes an overly long time to respond could lead to a temporary denial of service. (CVE-2012-4557)

Note that Nessus did not actually test for these flaws, but instead has relied on the version in the server's banner.


Upgrade to Apache version 2.2.22 or later.

See Also



Plugin Details

Severity: Medium

ID: 57791

File Name: apache_2_2_22.nasl

Version: 1.18

Type: remote

Family: Web Servers

Published: 2/2/2012

Updated: 6/29/2018

Risk Information


Risk Factor: High

Score: 8.3


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:http_server

Required KB Items: installed_sw/Apache

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/31/2012

Vulnerability Publication Date: 10/5/2011

Reference Information

CVE: CVE-2011-3368, CVE-2011-3607, CVE-2011-4317, CVE-2012-0021, CVE-2012-0031, CVE-2012-0053, CVE-2012-4557

BID: 49957, 50494, 50802, 51407, 51705, 51706, 56753