Heap-based buffer overflow in the embedded player in multiple RealNetworks products and versions including RealPlayer 10.x, RealOne Player, and Helix Player allows remote malicious servers to cause a denial of service (crash) and possibly execute arbitrary code via a chunked Transfer-Encoding HTTP response in which either (1) the chunk header length is specified as -1, (2) the chunk header with a length that is less than the actual amount of sent data, or (3) a missing chunk header.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11444
https://exchange.xforce.ibmcloud.com/vulnerabilities/25409
http://www.vupen.com/english/advisories/2006/1057
http://www.service.real.com/realplayer/security/03162006_player/en/
http://www.redhat.com/support/errata/RHSA-2005-788.html
http://www.redhat.com/support/errata/RHSA-2005-762.html
http://www.novell.com/linux/security/advisories/2006_18_realplayer.html
http://www.kb.cert.org/vuls/id/172489
http://securitytracker.com/id?1015808