This security advisory describes one critical risk vulnerability.
CWE-416 - Use After Free
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to use-after-free error when processing CSS token sequences and the clip attribute. A remote attacker can create a specially crafted HTML page, trick the victim into visiting it, cause memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: this vulnerability is being actively exploited.Mitigation
Install updates from vendor's website.
Microsoft Internet Explorer: 6, 7, 8CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.