User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the support for processing SoundBank files. While parsing BANK records, the HeadspaceSoundbank.nGetName function improperly sign-extends the one byte value into 4 bytes. It is later used as the size to a memcpy when operating on the BANK record's data. An attacker can abuse this to execute arbitrary code under the context of the user running the web browser.
