SNS Vulnerability

WordPress "wp_guess_url()" Cross-Site Scripting Vulnerability

Description

Aditya Modha and Samir Shah discovered a vulnerability in WordPress, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed via the URL to e.g. wp-comments-post.php is not properly sanitised within the "wp_guess_url()" function in wp-includes/functions.php before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
The vulnerability is confirmed in version 3.3.

Vulnerable Products

Vulnerable Software:
WordPress 3.x

Solution

Update to version 3.3.1.

CVE

CVE-2012-0287

References

WordPress:
http://wordpress.org/news/2012/01/wordpress-3-3-1/
Aditya Modha and Samir Shah:
http://oldmanlab.blogspot.com/2012/01/wordpress-33-xss-vulnerability.html

Vulnerability Manager Detection

IPS Protection

ASQ Engine alarm	Available Since
XSS - Prevention - GET : suspicious 'iframe' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious 'meta' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious tag with event found in URL	3.2.0
XSS - Prevention - GET : suspicious 'applet' tag found in URL	3.2.0
XSS - Phishing : suspicious 'div' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious 'style' attribute found in URL	3.2.0
XSS - Prevention - GET : suspicious 'img' tag found in URL	3.2.0
XSS - Phishing : suspicious 'a' tag found in URL	3.2.0
XSS - Prevention - GET : cookie access attempt using script language found in URL	3.2.0
XSS - Prevention - GET : suspicious 'embed' tag found in URL	3.2.0
XSS - Prevention - GET : suspicious 'object' tag found in URL	3.2.0
XSS - Phishing : suspicious 'form' tag found in URL	3.2.0
XSS - Prevention - GET : javascript code found in URL	3.2.0
XSS - Prevention - GET : evasion attempt using tag characters encoding in URL	3.2.0
XSS - Prevention - GET : suspicious 'style' tag found in URL	3.2.0
XSS - Phishing : suspicious 'link' tag found in URL	3.2.0
XSS - Prevention - GET : 'script' tag found in URL	3.2.0
XSS - Prevention - GET : 'location' javascript object found in URL	3.2.0
XSS - Prevention - GET : suspicious 'div' tag found in URL	3.2.0

Risk level

Low

Vulnerability First Public Report Date

2012-01-04

Target Type

Server

Possible exploit

Remote