Vulnerability identifier: #VU2828

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2011-2444

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

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

Vendor: Adobe

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-input passed via a crafted URL. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user’s browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Note: the vulnerability was being actively exploited in click-jacking campaigns.

Mitigation
Update Flash Player 10.3.183.7 and earlier to 10.3.183.10.
http://www.adobe.com/go/getflash
http://www.adobe.com/licensing/distribution
http://googlechromereleases.blogspot.com/
Update Flash Player 10.3.186.6 and earlier for Android to 10.3.186.7.
https://market.android.com/details?id=com.adobe.flashplayer&hl=en

Vulnerable software versions

Adobe Flash Player: 10.0.12.36 - 10.3.183.7

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External links
http://www.adobe.com/support/security/bulletins/apsb11-26.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.