Research > Zero-Day Tracker > 20121228
Internet Explorer CButton Use-After-Free Vulnerability
Internet Explorer 6, 7, and 8
A use-after-free vulnerability exists in Internet Explorer 6, 7, and 8. This has been seen exploited in the wild in December 2012 in targeted attacks. Successful exploitation allows the attacker to execute arbitrary remote code in the context of the current user.
Yes. This has been observed in the wild in targeted attacks.
Remote Code Execution
Exploitation of this vulnerability is possible through the use of methods like drive-by attacks. Remote attackers who successfully exploit this vulnerability will be able to execute code on the vulnerable system with the same rights as the currently logged on user.
Until a full patch is released, use the Microsoft Fix it tool to help mitigate the attack vector for this vulnerability. Additionally, EMET can be used to help prevent exploitation.
BeyondTrust's Retina® Network Security Scanner scans devices to detect for this vulnerability.
17920 – Microsoft Internet Explorer Remote Code Execution (Zero-Day)
12.28.2012 - Vulnerability Disclosed
12.31.2012 - Microsoft Fix it released
1.14.2013 - Vendor Patch Released
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