Important CentOS httpd Security Update


httpd-2.2.15-54.el6.centos.i686.rpm, httpd-2.2.15-54.el6.centos.src.rpm, httpd-2.2.15-54.el6.centos.x86_64.rpm, httpd-2.2.3-92.el5.centos.i386.rpm, httpd-2.2.3-92.el5.centos.src.rpm, httpd-2.2.3-92.el5.centos.x86_64.rpm, httpd-devel-2.2.15-54.el6.centos.i686.rpm, httpd-devel-2.2.15-54.el6.centos.x86_64.rpm, httpd-devel-2.2.3-92.el5.centos.i386.rpm, httpd-devel-2.2.3-92.el5.centos.x86_64.rpm, httpd-manual-2.2.15-54.el6.centos.noarch.rpm, httpd-manual-2.2.3-92.el5.centos.i386.rpm, httpd-manual-2.2.3-92.el5.centos.x86_64.rpm, httpd-tools-2.2.15-54.el6.centos.i686.rpm, httpd-tools-2.2.15-54.el6.centos.x86_64.rpm, mod_ssl-2.2.15-54.el6.centos.i686.rpm, mod_ssl-2.2.15-54.el6.centos.x86_64.rpm, mod_ssl-2.2.3-92.el5.centos.i386.rpm, mod_ssl-2.2.3-92.el5.centos.x86_64.rpm,,
2018-01-18 11:12
2017-07-27 19:11
2017-04-01 19:10
2017-01-05 20:14


An update for httpd is now available for Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

* It was discovered that httpd used the value of the Proxy header from HTTP requests to initialize the HTTP_PROXY environment variable for CGI scripts, which in turn was incorrectly used by certain HTTP client implementations to configure the proxy for outgoing HTTP requests. A remote attacker could possibly use this flaw to redirect HTTP requests performed by a CGI script to an attacker-controlled proxy via a malicious HTTP request. (CVE-2016-5387)

Note: After this update, httpd will no longer pass the value of the Proxy request header to scripts via the HTTP_PROXY environment variable.

Red Hat would like to thank Scott Geary (VendHQ) for reporting this issue.
Please see

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Affected package information

Release Package Patched in
5 httpd httpd-2.2.3-92.el5.centos.i386.rpm
httpd httpd-2.2.3-92.el5.centos.src.rpm
httpd httpd-2.2.3-92.el5.centos.x86_64.rpm
httpd-devel httpd-devel-2.2.3-92.el5.centos.i386.rpm
httpd-devel httpd-devel-2.2.3-92.el5.centos.x86_64.rpm
httpd-manual httpd-manual-2.2.3-92.el5.centos.i386.rpm
httpd-manual httpd-manual-2.2.3-92.el5.centos.x86_64.rpm
mod_ssl mod_ssl-2.2.3-92.el5.centos.i386.rpm
mod_ssl mod_ssl-2.2.3-92.el5.centos.x86_64.rpm
6 httpd httpd-2.2.15-54.el6.centos.i686.rpm
httpd httpd-2.2.15-54.el6.centos.src.rpm
httpd httpd-2.2.15-54.el6.centos.x86_64.rpm
httpd-devel httpd-devel-2.2.15-54.el6.centos.i686.rpm
httpd-devel httpd-devel-2.2.15-54.el6.centos.x86_64.rpm
httpd-manual httpd-manual-2.2.15-54.el6.centos.noarch.rpm
httpd-tools httpd-tools-2.2.15-54.el6.centos.i686.rpm
httpd-tools httpd-tools-2.2.15-54.el6.centos.x86_64.rpm
mod_ssl mod_ssl-2.2.15-54.el6.centos.i686.rpm
mod_ssl mod_ssl-2.2.15-54.el6.centos.x86_64.rpm