Buffer overflow in CMAN - The Cluster Manager before 2.03.09-1 on Fedora 9 and Red Hat Enterprise Linux (RHEL) 5 allows attackers to cause a denial of service (CPU consumption and memory corruption) via a cluster.conf file with many lines. NOTE: it is not clear whether this issue crosses privilege boundaries in realistic uses of the product.
Red Hat does not consider this to be a security issue. The misbehaviour of CMAN is triggered by corrupted / specially crafted cluster.conf configuration file. Ability to edit this file is restricted to system administrator, therefore no privilege boundary is crossed.