Vulnerability identifier: #VU5539

Vulnerability risk: Critical

CVSSv3.1: 9.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2010-0806

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Microsoft Internet Explorer
Client/Desktop applications / Web browsers

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to use-after-free error in the Peer Objects component within iepeers.dll library. A remote attacker can create a specially crafted web page, trick the victim into visiting it and execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note: this vulnerability is being actively exploited.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 5.01 - 7

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External links
http://technet.microsoft.com/en-us/library/security/ms10-018
http://blogs.technet.microsoft.com/mmpc/2010/03/30/active-exploitation-of-cve-2010-0806/
http://www.kb.cert.org/vuls/id/744549
http://technet.microsoft.com/en-us/library/security/981374

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.