SNS Vulnerability

WordPress Black-LetterHead Theme URL Cross-Site Scripting Vulnerability

Description

Sitewatch has discovered a vulnerability in the Black-LetterHead theme for WordPress, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input appended to the URL after index.php (when the "s" POST parameter is set) is not properly sanitised 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 1.5. Prior versions may also be affected.

Vulnerable Products

Vulnerable Software:
WordPress Black-LetterHead Theme 1.x

Solution

Update to version 1.7.1.

CVE

CVE-2011-3865

References

Black-LetterHead:
http://ulyssesonline.com/blackletterhead/2011/09/18/black-letterhead-1-7-1/
Sitewatch:
https://sitewat.ch/en/Advisories/24

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

2011-10-04

Target Type

Server

Possible exploit

Remote