Vulnerability identifier: #VU2925

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-2011-2110

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Adobe Flash Player
Client/Desktop applications / Plugins for browsers, ActiveX components

Vendor: Adobe

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

The weakness exists due to an array indexing error in the ActionScript3 AVM2 verification logic. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation
Update Adobe Flash Player for Windows, Macintosh, Linux and Solaris to 10.3.181.26.
http://www.adobe.com/go/getflash
http://www.adobe.com/licensing/distribution
http://googlechromereleases.blogspot.com/
Update Adobe Flash Player for Android to 10.3.185.24.
market://details?id=com.adobe.flashplayer

Vulnerable software versions

Adobe Flash Player: 10.0.12.36 - 10.1.102.64

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External links
http://www.adobe.com/support/security/bulletins/apsb11-18.html

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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.