SNS Vulnerability

Exponent CMS "src" Cross-Site Scripting Vulnerability

Description

Mavituna Security has discovered a vulnerability in Exponent CMS, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed via the "src" parameter to index.php (when "controller" is set to "expTag" and "action" is set to "show") is not properly sanitised framework/modules/core/views/expTag/show.tpl 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 2.0.6. Prior versions may also be affected.

Vulnerable Products

Vulnerable Software:
Exponent CMS 2.x

Solution

Edit the source code to ensure that input is properly sanitised.

CVE

References

Mavituna Security:
http://www.mavitunasecurity.com/blog/xss-and-blind-sql-injection-vulnerabilities-in-exponentcms/

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

2012-04-24

Target Type

Server

Possible exploit

Remote