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 rcsL chunk inside Adobe's RIFF-based Director file format. The code within the IML32.dll is affected by an integer overflow caused by the allocation of the input size plus 1 and the subsequent copying of the input string using the original size. The given size will wrap, causing a small buffer to be allocated. This can lead to memory corruption which can be leveraged to execute arbitrary code under the context of the user running the browser.