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.
** UNVERIFIABLE, PRERELEASE ** NOTE: this issue describes a problem that can not be independently verified as of 20051208. Unspecified vulnerability in unspecified versions of Real Networks RealPlayer allows remote attackers to execute arbitrary code. NOTE: it is not known whether this issue should be MERGED with CVE-2005-4126. The information regarding this issue is extremely vague and does not provide any verifiable information. It has been posted by a reliable reporter with a prerelease disclosure policy. This item has only been assigned a CVE identifier for tracking purposes, and to serve as a concrete example for discussion of the newly emerging UNVERIFIABLE and PRERELEASE content decisions in CVE, which must be discussed by the Editorial Board. Without additional details or independent verification by reliable sources, it is possible that this item might be RECAST or REJECTED.