December 13, 2011
Microsoft Windows Media Player and Windows Media Center are prone to a remote code-execution vulnerability. An attacker can exploit this issue by enticing an unsuspecting user into opening a malicious file with the vulnerable application. A successful exploit will allow arbitrary code to run in the context of the currently logged-in user.
- Microsoft Windows 7 for 32-bit Systems SP1
- Microsoft Windows 7 for x64-based Systems SP1
- Microsoft Windows Vista SP2
- Microsoft Windows Vista x64 Edition SP2
- Microsoft Windows XP Media Center Edition 2005 SP3
- Microsoft Windows XP Professional x64 Edition SP2
- Microsoft Windows XP Service Pack 3
Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from a successful exploit.
Do not accept or execute files from untrusted or unknown sources.
To reduce the likelihood of successful attacks, never handle or open files from unknown sources.
Do not follow links provided by unknown or untrusted sources.
To reduce the likelihood of successful exploits, never visit sites of questionable integrity or follow links provided by unfamiliar or untrusted sources.
Implement multiple redundant layers of security.
Various memory-protection schemes (such as nonexecutable and randomly mapped memory segments) may hinder an attacker's ability to exploit this vulnerability to execute arbitrary code. Host-based intrusion-prevention systems may also help prevent exploits.
The vendor has released an advisory and updates. Please see the references for details.
An anonymous researcher, working with VeriSign iDefense Labs.
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