Adobe Reader and Acrobat contain a flaw that allows a remote cross-site scripting (XSS) attack. This flaw exists because the application does not validate certain unspecified input before returning it to the user. This may allow a user to create a specially crafted URL that would execute arbitrary script code in a user's browser within the trust relationship between their browser and the server.

Upgrade to Adobe Reader X to version 10.1 or higher, or Adobe Reader and Acrobat to version 9.4.5 or 8.3 or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

• Security Tracker: 1025658
• OVAL ID: 13919
• CVE ID: 2011-2101 (see also: NVD)
• Secunia Advisory ID: 43269
• Bugtraq ID: 48255
• ISS X-Force ID: 68015
• Related OSVDB ID: 73055 73056 73057 73058 73059 73061 73062 73064 73065 73066 73067 73068
• Vendor Specific Advisory URL: http://www.adobe.com/support/security/bulletins/apsb11-16.html
• CERT: TA11-166A

• Billy Rios - Google Security Team