Microsoft Windows Fax Cover Page Editor Remote Code Execution Vulnerability
Risk
High
Date Discovered
December 26, 2010
Description
Microsoft Windows is prone to a remote code-execution vulnerability. The issue affects the Windows Fax Cover Page Editor component (fxscover.exe).
An attacker can exploit this issue by enticing an unsuspecting user into opening a specially crafted Fax Cover Page file.
Successfully exploiting this issue allows attackers to execute arbitrary code in the context of the application. Failed exploit attempts will result in a denial-of-service condition.
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Recommendations
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.
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com.
Credits
Andrea Micalizzi (rgod)
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