CVE-2011-3639

Medium

Description

The mod_proxy module in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x before 2.2.18, when the Revision 1179239 patch is in place, does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers by using the HTTP/0.9 protocol with a malformed URI containing an initial @ (at sign) character. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368.

SeverityMedium
CVSS4.3
Exploit probability—
ProductApache Http Server
PublishedNov 30, 2011
First seenNov 30, 2011

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
apache http_server2.0.11, 2.0.12, 2.0.13, 2.0.14, 2.0.15, 2.0.16, 2.0.17, 2.0.18, 2.0.19, 2.0.20, 2.0.21, 2.0.22, 2.0.23, 2.0.24, 2.0.25, 2.0.26, 2.0.27, 2.0.28, 2.0.29, 2.0.30, 2.0.31, 2.0.32, 2.0.33, 2.0.34, 2.0.35, 2.0.36, 2.0.37, 2.0.38, 2.0.39, 2.0.40, 2.0.41, 2.0.42, 2.0.43, 2.0.44, 2.0.45, 2.0.46, 2.0.47, 2.0.48, 2.0.49, 2.0.50, 2.0.51, 2.0.52, 2.0.53, 2.0.54, 2.0.55, 2.0.56, 2.0.57, 2.0.58, 2.0.59, 2.0.61, 2.0.63, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.6, 2.2.8, 2.2.9, 2.2.10, 2.2.11, 2.2.12, 2.2.13, 2.2.14, 2.2.15, 2.2.16, 2.2.17—
apache http_server2.0a1No range specified—
apache http_server2.0a2No range specified—
apache http_server2.0a3No range specified—
apache http_server2.0a4No range specified—
apache http_server2.0a5No range specified—
apache http_server2.0a6No range specified—
apache http_server2.0a7No range specified—
apache http_server2.0a8No range specified—
apache http_server2.0a9No range specified—

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CVE-2011-3639 · Apache Http Server · Dark Radar