Date Discovered May 8, 2012
Description Microsoft Word is prone to a remote memory-corruption vulnerability.
An attacker can exploit this issue to execute arbitrary code in the context of the currently logged-in user. Failed exploit attempts will likely result in denial-of-service conditions.
- Microsoft Office 2008 for Mac
- Microsoft Office 2011 for Mac
- Microsoft Office Compatibility Pack SP2
- Microsoft Office Compatibility Pack SP3
- Microsoft Word 2003 SP1
- Microsoft Word 2003 SP2
- Microsoft Word 2003 SP3
- Microsoft Word 2007
- Microsoft Word 2007 SP1
- Microsoft Word 2007 SP2
- Microsoft Word 2007 SP3
Run all software as a nonprivileged user with minimal access rights. To mitigate the impact of a successful exploit, run the affected application as a 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. Never accept files from untrusted or unknown sources, because they may be malicious in nature. Avoid opening email attachments from unknown or questionable 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 exploit attempts of memory-corruption vulnerabilities.
The vendor has released an advisory and updates. Please see the referenced advisory for details.
Credits An anonymous researcher working with TippingPoint's Zero Day Initiative
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