RHSA-2013:0729 - Security Advisory

Topic

An updated haproxy package that fixes one security issue is now available
for Red Hat OpenShift Enterprise 1.1.3.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

HAProxy provides high availability, load balancing, and proxying for TCP
and HTTP-based applications.

A buffer overflow flaw was found in the way HAProxy handled pipelined HTTP
requests. A remote attacker could send pipelined HTTP requests that would
cause HAProxy to crash or, potentially, execute arbitrary code with the
privileges of the user running HAProxy. This issue only affected systems
using all of the following combined configuration options: HTTP keep alive
enabled, HTTP keywords in TCP inspection rules, and request appending
rules. (CVE-2013-1912)

In Red Hat OpenShift Enterprise, the HAProxy cartridge is added to your
application when you select to have your application scaled. Due to the
way this cartridge is currently used in Red Hat OpenShift Enterprise, the
CVE-2013-1912 issue is not exploitable.

Red Hat would like to thank Willy Tarreau of HAProxy upstream for reporting
this issue. Upstream acknowledges Yves Lafon from the W3C as the original
reporter.

Users of Red Hat OpenShift Enterprise 1.1.3 are advised to upgrade to this
updated package, which contains a backported patch to correct this issue.

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

Affected Products

• Red Hat OpenShift Enterprise Application Node 1 x86_64

Fixes

• BZ - 947581 - CVE-2013-1912 haproxy: rewrite rules flaw can lead to arbitrary code execution

CVEs

• CVE-2013-1912

References

• https://access.redhat.com/security/updates/classification/#moderate