apr security update

CentOS Errata and Security Advisory CESA-2009:1204

The Apache Portable Runtime (APR) is a portability library used by the
Apache HTTP Server and other projects. It aims to provide a free library
of C data structures and routines. apr-util is a utility library used with
APR. This library provides additional utility interfaces for APR; including
support for 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 apr and apr-util users should upgrade to these updated packages, which
contain backported patches to correct these issues. Applications using the
APR libraries, such as httpd, must be restarted for this update to take
effect.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2009-August/078234.html
https://lists.centos.org/pipermail/centos-announce/2009-August/078235.html

Affected packages:
apr
apr-devel
apr-docs
apr-util
apr-util-devel
apr-util-docs

Upstream details at:
https://access.redhat.com/errata/RHSA-2009:1204