Date Discovered May 8, 2012
Description Microsoft Windows is prone to a remote code-execution vulnerability that affects the TrueType Font engine.
An attacker can exploit this issue through the Windows Kernel-Mode drivers to execute arbitrary code in kernel mode. The attacker can also exploit this issue through Microsoft Silverlight, Microsoft Office, or other affected Windows components to execute arbitrary code with user-level privileges.
Successful exploits will completely compromise an affected computer. Failed attempts will result in a denial-of-service condition.
Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells. To exploit this vulnerability, an attacker requires local access to an
affected computer. Grant local access for trusted and accountable users
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. Users should never accept files from untrusted or unknown sources, because they may be malicious in nature. Avoid opening email attachments from unknown or questionable sources.
Do not accept communications that originate from unknown or untrusted sources. Do not follow links or open email from unknown 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 exploit attempts of memory-corruption vulnerabilities.
The vendor released an advisory and updates. Please see the references for details.
Credits Alin Rad Pop working with Tipping Point's Zero Day Initiative
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