Vulnerability identifier: #VU5586
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:
CWE-ID:
CWE-119
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 boundary error when parsing CSS styles. A remote attacker can create a specially crafted web page containing Cascading Style Sheet that refers to itself recursively, cause memory corruption and execute arbitrary code on the target system with privileges of the current user.
Successful exploitation of this vulnerability may allow an attacker to compromise vulnerable system.
Note: this vulnerability is being actively exploited.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Microsoft Internet Explorer: 6 - 8
External links
http://technet.microsoft.com/en-us/library/security/2488013
http://technet.microsoft.com/en-us/library/security/ms11-003
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.