Red Hat Security Advisory 2013-1204-01 – HAProxy provides high availability, load balancing, and proxying for TCP and HTTP-based applications. A flaw was found in the way HAProxy handled requests when the proxy’s configuration had certain rules that use the hdr_ip criterion. A remote attacker could use this flaw to crash HAProxy instances that use the affected configuration. In Red Hat OpenShift Enterprise, the HAProxy cartridge is added to your application when you select to have your application scaled…. Red Hat Security Advisory 2013-1204-01 – HAProxy provides high availability, load balancing, and proxying for TCP and HTTP-based applications. A flaw was found in the way HAProxy handled requests when the proxy’s configuration had certain rules that use the hdr_ip criterion. A remote attacker could use this flaw to crash HAProxy instances that use the affected configuration. In Red Hat OpenShift Enterprise, the HAProxy cartridge is added to your application when you select to have your application scaled.

Read more http://packetstormsecurity.com/files/123092/RHSA-2013-1204-01.txt