Moderate: httpd22 security update

Updated httpd22 packages that fix multiple security issues are now
available for JBoss Enterprise Web Server 1.0.0 for Red Hat Enterprise
Linux 4.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

The Apache HTTP Server is a popular Web server. The httpd22 packages
shipped with JBoss Enterprise Web Server 1.0.0 for Red Hat Enterprise Linux
4 contain embedded copies of the Apache Portable Runtime (APR) libraries,
which provide a free library of C data structures and routines, and also
additional utility interfaces to support XML parsing, LDAP, database
interfaces, URI parsing, and more.

Multiple integer overflow flaws, leading to heap-based buffer overflows,
were found in the way the Apache Portable Runtime (APR) manages memory pool
and relocatable memory allocations. An attacker could use these flaws to
issue a specially-crafted request for memory allocation, which would lead
to a denial of service (application crash) or, potentially, execute
arbitrary code with the privileges of an application using the APR
libraries. (CVE-2009-2412)

All users of JBoss Enterprise Web Server 1.0.0 should upgrade to these
updated packages, which contain backported patches to correct these issues.
After installing the updated packages, the httpd daemon must be restarted
for the update to take effect.

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

515698 - CVE-2009-2412 apr, apr-util: Integer overflows in memory pool (apr) and relocatable memory (apr-util) management

https://www.redhat.com/security/data/cve/CVE-2009-2412.html
http://www.redhat.com/security/updates/classification/#moderate