Apache 2.2 < 2.2.22 Multiple Vulnerabilities

medium Nessus Network Monitor Plugin ID 6302


The remote web server is vulnerable to multiple attack vectors.


Versions of Apache 2.2 earlier than 2.2.22 are potentially affected by the following vulnerabilities :

- When configured as a reverse proxy, improper use of the RewriteRule and ProxyPasssMatch directives could cause the web server to proxy requests to arbitrary hosts. This could allow a remote attacker to indirectly send request 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. (CVE-2012-0021)

- An error exists in 'scoreboard.c' that can allow local attackers to crash the server during shutdown. (CVE-2012-0031)

- 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)


Upgrade to Apache version 2.2.22 or later.

See Also



Plugin Details

Severity: Medium

ID: 6302

Family: Web Servers

Published: 2/6/2012

Updated: 3/6/2019

Nessus ID: 57791

Risk Information


Risk Factor: Medium

Score: 6.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 4.1

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


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.9

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:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:http_server:2.2

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