5 - RHSA-2013:0512

Problem Description:

Updated httpd packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

3. Description:

The httpd packages contain the Apache HTTP Server (httpd), which is the namesake project of The Apache Software Foundation.

An input sanitization flaw was found in the mod_negotiation Apache HTTP Server module. A remote attacker able to upload or create files with arbitrary names in a directory that has the MultiViews options enabled, could use this flaw to conduct cross-site scripting attacks against users visiting the site. (CVE-2008-0455, CVE-2012-2687)

It was discovered that mod_proxy_ajp, when used in configurations with mod_proxy in load balancer mode, would mark a back-end server as failed when request processing timed out, even when a previous AJP (Apache JServ Protocol) CPing request was responded to by the back-end. A remote attacker able to make a back-end use an excessive amount of time to process a request could cause mod_proxy to not send requests to back-end AJP servers for the retry timeout period or until all back-end servers were marked as failed. (CVE-2012-4557)

These updated httpd packages include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked to in the References, for information on the most significant of these changes.

All users of httpd are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements. After installing the updated packages, the httpd daemon will be restarted automatically.

4. Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

5. Bugs fixed (http://bugzilla.redhat.com/):

757735 - [RFE] httpd's rotatelogs needs a way to rotate files into a custom location 757739 - [RFE] rotatelogs needs to create files even if they are empty 805720 - Only a single interface is available for SSL 805810 - init script for htcacheclean is missing 828896 - mod_authnz_ldap unable to set environment variables for authorize only 829689 - mod_ldap: fix occasional 500 Internal Server Error 842376 - httpd fails in processing chunked requests with > 31 bytes chunk-size / -extension line 848954 - Putting private key first in SSLProxyMachineCertificateFile causes segfault 850794 - CVE-2012-2687 CVE-2008-0455 httpd: mod_negotiation XSS via untrusted file names in directories with MultiViews enabled 867745 - mod_ssl post install script can cause failures 868283 - mod_cache regression in httpd 2.2.3-65: non-cacheable 304 responses serve bad data 871685 - CVE-2012-4557 httpd: mod_proxy_ajp worker moved to error state when timeout exceeded 876923 - "if" condition always true - detected by Coverity