CVE-2011-4317

Medium

Description

The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21, 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 via a malformed URI containing an @ (at sign) character and a : (colon) character in invalid positions. 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_server1.3, 1.3.0, 1.3.1, 1.3.1.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8, 1.3.9, 1.3.10, 1.3.11, 1.3.12, 1.3.13, 1.3.14, 1.3.15, 1.3.16, 1.3.17, 1.3.18, 1.3.19, 1.3.20, 1.3.22, 1.3.23, 1.3.24, 1.3.25, 1.3.26, 1.3.27, 1.3.28, 1.3.29, 1.3.30, 1.3.31, 1.3.32, 1.3.33, 1.3.34, 1.3.35, 1.3.36, 1.3.37, 1.3.38, 1.3.39, 1.3.41, 1.3.42, 1.3.65, 1.3.68, 2.0, 2.0.9, 2.0.28, 2.0.32, 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, 2.0.60, 2.0.61, 2.0.63, 2.0.64, 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, 2.2.18, 2.2.19, 2.2.20, 2.2.21—

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