Issued:
2012-02-13
Updated:
2012-02-13

RHSA-2012:0128 - Moderate: httpd security update

Synopsis

Moderate: httpd security update

Type/Severity

Security Advisory Moderate

Topic

Updated httpd packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate 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.

Description

The Apache HTTP Server is a popular web server.

It was discovered that the fix for CVE-2011-3368 (released via RHSA-2011:1391) did not completely address the problem. An attacker could bypass the fix and make a reverse proxy connect to an arbitrary server not directly accessible to the attacker by sending an HTTP version 0.9 request, or by using a specially-crafted URI. (CVE-2011-3639, CVE-2011-4317)

The httpd server included the full HTTP header line in the default error page generated when receiving an excessively long or malformed header. Malicious JavaScript running in the server's domain context could use this flaw to gain access to httpOnly cookies. (CVE-2012-0053)

An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way httpd performed substitutions in regular expressions. An attacker able to set certain httpd settings, such as a user permitted to override the httpd configuration for a specific directory using a ".htaccess" file, could use this flaw to crash the httpd child process or, possibly, execute arbitrary code with the privileges of the "apache" user. (CVE-2011-3607)

A flaw was found in the way httpd handled child process status information. A malicious program running with httpd child process privileges (such as a PHP or CGI script) could use this flaw to cause the parent httpd process to crash during httpd service shutdown. (CVE-2012-0031)

All httpd users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd daemon will be restarted automatically.

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 This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Storage2.0x86_64
Red Hat Storage for Public Cloud (via RHUI)2.0x86_64
Red Hat Gluster Storage Server for On-premise2.0x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.2ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.2s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - AUS6.2x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • httpd-2.2.15-15.el6_2.1.src.rpm
  • httpd-debuginfo-2.2.15-15.el6_2.1.ppc64.rpm
  • httpd-2.2.15-15.el6_2.1.ppc64.rpm
  • httpd-debuginfo-2.2.15-15.el6_2.1.i686.rpm
  • httpd-debuginfo-2.2.15-15.el6_2.1.ppc.rpm
  • mod_ssl-2.2.15-15.el6_2.1.s390x.rpm
  • mod_ssl-2.2.15-15.el6_2.1.x86_64.rpm
  • httpd-debuginfo-2.2.15-15.el6_2.1.x86_64.rpm
  • httpd-2.2.15-15.el6_2.1.x86_64.rpm
  • httpd-tools-2.2.15-15.el6_2.1.x86_64.rpm
  • httpd-manual-2.2.15-15.el6_2.1.noarch.rpm
  • httpd-tools-2.2.15-15.el6_2.1.i686.rpm
  • httpd-2.2.15-15.el6_2.1.i686.rpm
  • httpd-devel-2.2.15-15.el6_2.1.ppc64.rpm
  • httpd-devel-2.2.15-15.el6_2.1.ppc.rpm
  • httpd-devel-2.2.15-15.el6_2.1.i686.rpm
  • httpd-tools-2.2.15-15.el6_2.1.ppc64.rpm
  • httpd-debuginfo-2.2.15-15.el6_2.1.s390.rpm
  • httpd-devel-2.2.15-15.el6_2.1.s390.rpm
  • httpd-devel-2.2.15-15.el6_2.1.s390x.rpm
  • httpd-devel-2.2.15-15.el6_2.1.x86_64.rpm
  • httpd-tools-2.2.15-15.el6_2.1.s390x.rpm
  • httpd-2.2.15-15.el6_2.1.s390x.rpm
  • mod_ssl-2.2.15-15.el6_2.1.ppc64.rpm
  • httpd-debuginfo-2.2.15-15.el6_2.1.s390x.rpm
  • mod_ssl-2.2.15-15.el6_2.1.i686.rpm

Fixes

CVEs

References

Additional information