April 13, 2010
Microsoft Windows Authenticode Signature Verification is prone to a remote code-execution vulnerability. Attackers can exploit this issue by enticing an unsuspecting victim to run or install a specially modified signed Portable Executable (PE) or cabinet file. Successful exploits can allow attackers to execute arbitrary code with the privileges of the user running the application.
- 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
- Avaya Messaging Application Server MM 1.1
- Avaya Messaging Application Server MM 2.0
- Avaya Messaging Application Server MM 3.0
- Avaya Messaging Application Server MM 3.1
- Microsoft Authenticode Signature Verification 5.1
- Microsoft Authenticode Signature Verification 6.0
- Microsoft Authenticode Signature Verification 6.1
- Nortel Networks CallPilot 1002rp
- Nortel Networks CallPilot 1005r
- Nortel Networks CallPilot 201i
- Nortel Networks CallPilot 202i
- Nortel Networks CallPilot 600r
- Nortel Networks CallPilot 702t
- Nortel Networks CallPilot 703t
- Nortel Networks Contact Center - TAPI Server
- Nortel Networks Contact Center Administration
- Nortel Networks Contact Center Manager Server
- Nortel Networks Contact Center NCC
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 suspicious or anomalous activity. This may help detect malicious actions that an attacker may take after successfully exploiting vulnerabilities in applications. Review all applicable logs regularly.
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.
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.
The vendor has released an advisory and updates. Please see the references for details.
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