Microsoft out-of-band Security Advisory for IE 8 (May 4, 2013)

Microsoft has released an out-of-band bulletin Microsoft Security Advisory (2847140) addressing an IE 8 vulnerability on May 3, 2013. The vulnerability exists in the way that Internet Explorer accesses an object in memory that has been deleted or has not been properly allocated. The vulnerability may corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user within Internet Explorer. The vulnerability does not affect other IE versions.

This vulnerability has been referred by CVE as CVE-2013-1347.

Dell SonicWALL threat team has researched this vulnerability at the same day and created three IPS signatures to capture the attack traffic. The following are the list of the IPS signatures.

• 9871 EXPLOIT HTTP Client Shellcode Exploit 77
• 9872 WEB-CLIENT HTTP Client Suspicious Function Call
• 9873 WEB-CLIENT HTTP Client Suspicious Function Call 2

For the Microsoft vulnerabilities covered by SonicWALL, please refer to SonicWALL MAPP for details.

Update(May 8, 2013): the Fix It Information has been released by Microsoft on May 8, 2013.

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The SonicWall Capture Labs Threat Research Team gathers, analyzes and vets cross-vector threat information from the SonicWall Capture Threat network, consisting of global devices and resources, including more than 1 million security sensors in nearly 200 countries and territories. The research team identifies, analyzes, and mitigates critical vulnerabilities and malware daily through in-depth research, which drives protection for all SonicWall customers. In addition to safeguarding networks globally, the research team supports the larger threat intelligence community by releasing weekly deep technical analyses of the most critical threats to small businesses, providing critical knowledge that defenders need to protect their networks.