SNS Vulnerability

LISTSERV "SHOWTPL" Cross-Site Scripting Vulnerability

Description

Foreground Security has discovered a vulnerability in LISTSERV, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed via the "SHOWTPL" parameter to WA.exe 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 16.0 (Build date: 8 Nov 2011). Other versions may also be affected.

Vulnerable Products

Vulnerable Software:
LISTSERV 16.x

Solution

No official solution is currently available.

CVE

References

http://foregroundsecurity.com/component/content/article/1/127-lsoft-listserv-v16-wa-revision-r4241-showtpl-parameter-xss-cross-site-scripting

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
SQL injection Prevention - GET : Evasion attempt with CAST and EXEC statements	5.0.0

Risk level

Low

Vulnerability First Public Report Date

2012-08-20

Target Type

Server

Possible exploit

Remote