March 8, 2011
Microsoft Remote Desktop Connection client is prone to a vulnerability that lets attackers execute arbitrary code. An attacker can exploit this issue by enticing a legitimate user to use the vulnerable application to open a file from a network share location that contains a specially crafted Dynamic Link Library (DLL) file. NOTE: This issue may be related to BID 42853 (Microsoft Remote Desktop Protocol 'ieframe.dll' DLL Loading Arbitrary Code Execution Vulnerability).
- Avaya CallPilot 4.0
- Avaya CallPilot 5.0
- Avaya Communication Server 1000 Telephony Manager 3.0
- Avaya Communication Server 1000 Telephony Manager 4.0
- Avaya Conferencing Standard Edition 6.0
- 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 4
- Avaya Messaging Application Server 5
- Avaya Messaging Application Server 5.2
- Microsoft RDP 5.2
- Microsoft RDP 6.0
- Microsoft RDP 6.1
- Microsoft RDP 7.0
- Microsoft Remote Desktop Connection Multilingual UI 6.0
Block external access at the network boundary, unless external parties require service.
If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.
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.
Do not accept or execute files from untrusted or unknown sources.
To reduce the risk of successful exploit do not open or handle files from unknown 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.
The vendor has released an advisory and updates. Please see the references for details.
Eyal Gruner of Versafe Anti Fraud
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