March 11, 2014
Microsoft DirectShow is prone to a remote code-execution vulnerability. Successful exploits allow remote attackers to execute arbitrary code in the context of the user running the application that uses DirectShow. Failed exploit attempts will result in a denial-of-service condition.
- Avaya Aura Conferencing 6.0 SP1 Standard
- Avaya Aura Conferencing 6.0 Standard
- Avaya CallPilot
- Avaya Communication Server 1000 Telephony Manager
- Avaya Meeting Exchange - Client Registration Server
- Avaya Meeting Exchange - Recording Server
- Avaya Meeting Exchange - Streaming Server
- Avaya Meeting Exchange - Web Conferencing Server
- Avaya Meeting Exchange - Webportal
- Avaya Messaging Application Server
- Microsoft Windows 7 for 32-bit Systems SP1
- Microsoft Windows 7 for x64-based Systems SP1
- Microsoft Windows 8 for 32-bit Systems
- Microsoft Windows 8 for x64-based Systems
- Microsoft Windows 8.1 for 32-bit Systems
- Microsoft Windows 8.1 for x64-based Systems
- Microsoft Windows Server 2003 Itanium SP2
- Microsoft Windows Server 2003 SP2
- Microsoft Windows Server 2003 x64 Edition Service Pack 2
- Microsoft Windows Server 2008 R2 for x64-based Systems SP1
- Microsoft Windows Server 2008 for 32-bit Systems
- Microsoft Windows Server 2008 for x64-based Systems SP2
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 R2
- Microsoft Windows Vista Service Pack 2
- Microsoft Windows Vista x64 Edition Service Pack 2
- Microsoft Windows XP Professional SP2
- Microsoft Windows XP Service Pack 3
Run all software as a nonprivileged user with minimal access rights.
To limit the potential damage that a successful exploit may achieve, run all nonadministrative software as a regular user with the least amount of privileges required to successfully operate.
Do not accept or execute files from untrusted or unknown sources.
To reduce the likelihood of successful exploits, never handle files that originate from unfamiliar or untrusted sources.
Do not follow links provided by unknown or untrusted sources.
Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.
Implement multiple redundant layers of security.
Since this issue may be leveraged to execute code, we recommend memory-protection schemes, such as nonexecutable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploits of memory-corruption vulnerabilities.
Updates are available. Please see the references or vendor advisory for more information.
An anonymous researcher, working with VeriSign iDefense Labs
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