Vulnerability identifier: #VU4555

Vulnerability risk: Critical

CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2013-0643

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Adobe Flash Player for Linux
Client/Desktop applications / Multimedia 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 error when handling permissions of the Flash Player Firefox sandbox. A remote attacker can create specially crafted Web site serving malicious Flash (SWF) content, trick the victim into visiting it, bypass the sandbox restrictions and execute arbitrary code outside the sandbox 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 to version 11.6.602.171.
Update Adobe Flash Player for Linux to version 11.2.202.273.

Vulnerable software versions

Adobe Flash Player for Linux: 11.2.202.238 - 11.2.202.273

Adobe Flash Player: 10.0.12.36 - 11.6.602.171

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External links
http://www.adobe.com/support/security/bulletins/apsb13-08.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?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.