Security Advisory SSA-1103

Adobe Shockwave AudioMixer Structure Parsing Remote Code Execution Vulnerability

Reference ID: SSA-1103
Publication date: 14.06.2011
Severity: critical
Discovered by: Sebastian Apelt

Affected product/version: Adobe Shockwave, version 11.5.9.615

Description from ZDI advisory: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Shockwave. 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 AudioMixer.x32 module responsible for parsing mixer structures from within Director movie files (.dir). While handling a size element, the code performs an unchecked multiplication operation which can cause an integer to wrap. This results in an undersized heap allocation which can be overflowed with user data leading to arbitrary code execution under the context of the user running the browser.

References:
ZDI-11-200
CVE-2011-2121
Advisory by Adobe