RHSA-2014:0922 - Security Advisory

Topic

Updated httpd24-httpd packages that fix multiple security issues are now
available for Red Hat Software Collections 1.

The Red Hat Security Response Team has rated this update as having
Important 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 httpd packages provide the Apache HTTP Server, a powerful, efficient,
and extensible web server.

A race condition flaw, leading to heap-based buffer overflows, was found in
the mod_status httpd module. A remote attacker able to access a status page
served by mod_status on a server using a threaded Multi-Processing Module
(MPM) could send a specially crafted request that would cause the httpd
child process to crash or, possibly, allow the attacker to execute
arbitrary code with the privileges of the "apache" user. (CVE-2014-0226)

A NULL pointer dereference flaw was found in the mod_cache httpd module.
A malicious HTTP server could cause the httpd child process to crash when
the Apache HTTP Server was used as a forward proxy with caching.
(CVE-2013-4352)

A denial of service flaw was found in the mod_proxy httpd module. A remote
attacker could send a specially crafted request to a server configured as a
reverse proxy using a threaded Multi-Processing Modules (MPM) that would
cause the httpd child process to crash. (CVE-2014-0117)

A denial of service flaw was found in the way httpd's mod_deflate module
handled request body decompression (configured via the "DEFLATE" input
filter). A remote attacker able to send a request whose body would be
decompressed could use this flaw to consume an excessive amount of system
memory and CPU on the target system. (CVE-2014-0118)

A denial of service flaw was found in the way httpd's mod_cgid module
executed CGI scripts that did not read data from the standard input.
A remote attacker could submit a specially crafted request that would cause
the httpd child process to hang indefinitely. (CVE-2014-0231)

All httpd24-httpd users are advised to 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
https://access.redhat.com/articles/11258

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.5 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.4 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 6 x86_64

Fixes

• BZ - 1120596 - CVE-2014-0231 httpd: mod_cgid denial of service
• BZ - 1120599 - CVE-2014-0117 httpd: mod_proxy denial of service
• BZ - 1120601 - CVE-2014-0118 httpd: mod_deflate denial of service
• BZ - 1120603 - CVE-2014-0226 httpd: mod_status heap-based buffer overflow
• BZ - 1120604 - CVE-2013-4352 httpd: mod_cache NULL pointer dereference crash

CVEs

• CVE-2013-4352
• CVE-2014-0117
• CVE-2014-0118
• CVE-2014-0226
• CVE-2014-0231

References

• http://www.redhat.com/security/updates/classification/#important