Improper Input Validation Affecting httpd package, versions <0:2.2.15-15.el6_2.1


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
1.32% (86th percentile)

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  • Snyk IDSNYK-CENTOS6-HTTPD-2053391
  • published26 Jul 2021
  • disclosed26 Oct 2011

Introduced: 26 Oct 2011

CVE-2011-3639  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Centos:6 httpd to version 0:2.2.15-15.el6_2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd package and not the httpd package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

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.

CVSS Scores

version 3.1