Launchpad.net

CVE 2010-0417

Buffer overflow in common/util/rlstate.cpp in Helix Player 1.0.6 and RealPlayer allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a RuleBook structure with a large number of rule-separator characters that trigger heap memory corruption.

See the CVE page on Mitre.org for more details.