Moderate Advisory for Scientific Linux 5.x: CVE-2007-3847 httpd DoS Issue

Date:         Fri, 9 Nov 2007 16:44:36 -0600
Reply-To:     Connie Sieh 
Sender:       Security Errata for Scientific Linux
              
From:         Connie Sieh 
Subject:      Security ERRATA for httpd on SL5.x
Comments: To: scientific 

Synopsis:          Moderate: httpd security, bug fix, and enhancement update

CVE Names:         CVE-2007-3847

Problem description:

A flaw was found in the Apache HTTP Server mod_proxy module. On sites where
a reverse proxy is configured, a remote attacker could send a carefully
crafted request that would cause the Apache child process handling that
request to crash. On sites where a forward proxy is configured, an attacker
could cause a similar crash if a user could be persuaded to visit a
malicious site using the proxy. This could lead to a denial of service if
using a threaded Multi-Processing Module. (CVE-2007-3847)

As well, these updated packages fix the following bugs:

* Set-Cookie headers with a status code of 3xx are not forwarded to
clients when the "ProxyErrorOverride" directive is enabled. These
responses are overridden at the proxy. Only the responses with status
codes of 4xx and 5xx are overridden in these updated packages.

* the default "/etc/logrotate.d/httpd" script incorrectly invoked the kill
command, instead of using the "/sbin/service httpd restart" command. If you
configured the httpd PID to be in a location other than
"/var/run/httpd.pid", the httpd logs failed to be rotated. This has been
resolved in these updated packages.

* the "ProxyTimeout" directive was not inherited across virtual host
definitions.

* the logresolve utility was unable to read lines longer the 1024 bytes.

This update adds the following enhancements:

* a new configuration option has been added, "ServerTokens Full-Release",
which adds the package release to the server version string, which is
returned in the "Server" response header.

* a new module has been added, mod_version, which allows configuration
files to be written containing sections, which are evaluated only if the
version of httpd used matches a specified condition.

SL5.x

SRPMS:
 	httpd-2.2.3-11.sl5.src.rpm

i386:
 	httpd-2.2.3-11.sl5.i386.rpm
 	mod_ssl-2.2.3-11.sl5.i386.rpm
 	httpd-manual-2.2.3-11.sl5.i386.rpm

x86_64:
 	httpd-2.2.3-11.sl5.x86_64.rpm
 	mod_ssl-2.2.3-11.sl5.x86_64.rpm
 	httpd-devel-2.2.3-11.sl5.i386.rpm
 	httpd-devel-2.2.3-11.sl5.x86_64.rpm
 	httpd-manual-2.2.3-11.sl5.x86_64.rpm

-Connie Sieh
-Troy Dawson