Cross-site scripting in WordPress - CVE-2012-2399

Detailed vulnerability description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in swfupload.swf in SWFupload 2.2.0.1 and earlier, as used in WordPress before 3.5.2, TinyMCE Image Manager 1.1 and earlier, and other products when processing buttonText parameter, a different vulnerability than CVE-2012-3414. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security 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.

How to mitigate CVE-2012-2399

Sources

• http://core.trac.wordpress.org/browser/branches/3.3/wp-includes/js/swfupload/swfupload.swf?rev=20503
• http://jvn.jp/en/jp/JVN25280162/index.html
• http://jvndb.jvn.jp/jvndb/JVNDB-2012-002110
• http://make.wordpress.org/core/2013/06/21/secure-swfupload/
• http://osvdb.org/81459
• http://packetstormsecurity.com/files/120746/SWFUpload-Content-Spoofing-Cross-Site-Scripting.html
• http://packetstormsecurity.com/files/122399/tinymce11-xss.txt
• http://seclists.org/fulldisclosure/2013/Mar/110
• http://secunia.com/advisories/49138
• http://wordpress.org/news/2012/04/wordpress-3-3-2/
• http://www.debian.org/security/2012/dsa-2470
• http://www.openwall.com/lists/oss-security/2013/07/18/13
• http://www.osvdb.org/91134
• http://www.securityfocus.com/bid/53192
• https://exchange.xforce.ibmcloud.com/vulnerabilities/75210