CVE 2006-6172
Buffer overflow in the asmrp_eval function in the RealMedia RTSP stream handler (asmrp.c) for Real Media input plugin, as used in (1) xine/xine-lib, (2) MPlayer 1.0rc1 and earlier, and possibly others, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a rulebook with a large number of rulematches.
See the 
CVE page on Mitre.org
for more details.
