SNS Vulnerability

Serendipity Karma Plugin Multiple Cross-Site Scripting Vulnerabilities

Description

Stefan Schurtz has discovered multiple vulnerabilities in Serendipity, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed to the "serendipity[filter][entryid]", "serendipity[filter][ip]", "serendipity[filter][title]", and "serendipity[filter][user_agent]" parameters in serendipity_admin.php (when "serendipity[adminModule]" is set to "event_display" and "serendipity[adminAction]" is set to "karmalog") 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.
Successful exploitation requires that the "Karma" plugin is enabled.
The vulnerabilities are confirmed in version 1.6. Other versions may also be affected.

Vulnerable Products

Vulnerable Software:
Serendipity 1.x

Solution

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

CVE

References

Stefan Schurtz:
http://www.rul3z.de/advisories/SSCHADV2011-017.txt

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

2011-11-04

Target Type

Server

Possible exploit

Remote