Apache HTTP Server mod_proxy Reverse Proxy HTTP 0.9 Information Disclosure

medium Nessus Plugin ID 57875
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The web server running on the remote host has an information disclosure vulnerability.


The version of Apache HTTP Server running on the remote host has an information disclosure vulnerability. 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 by making specially crafted HTTP 0.9 requests.

This vulnerability only affects versions 2.2.x before 2.2.18 that have backported the fix for CVE-2011-3368.


Contact the distro/vendor for the latest update of Apache httpd.

See Also




Plugin Details

Severity: Medium

ID: 57875

File Name: apache_mod_proxy_info_leak2.nasl

Version: 1.3

Type: remote

Family: Web Servers

Published: 2/9/2012

Updated: 6/27/2018

Dependencies: apache_mod_proxy_info_leak.nasl

Risk Information


Risk Factor: Medium

Score: 4.2


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

Vulnerability Information

CPE: cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

Excluded KB Items: /tmp/CVE-2011-3368

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/25/2011

Vulnerability Publication Date: 10/25/2011

Exploitable With

ExploitHub (EH-14-410)

Reference Information

CVE: CVE-2011-3639

BID: 51869