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PR08-23 - XSS on Novell GroupWise WebAccess

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Advisories (Vulnerabilities) & Papers

Vulnerability found:
02 October 2008
Vendor informed:
03 October 2008
Severity level:
Richard Brain of ProCheckUp Ltd ( ProCheckUp thanks Novell for working with us in such a professional manner.
Novell GroupWise WebAcces is vulnerable to a vanilla XSS (non-persistent) via POST requests. Although filtering takes place for GET requests, POST requests are ignored.

Vulnerable server-side script: '/gw/webacc',
Unfiltered parameter: '', 'Library.queryText'

Sucessfully tested on

Novell GroupWise WebAccess 7.0.3

Novell has confirmed the following versions to be affected by this vulnerability:

GroupWise 6.5x
GroupWise 7.0, 7.01, 7.02x, 7.03
GroupWise 8.0 (shipping 8.0 release only)

CVE reference



An attacker may be able to cause execution of malicious scripting code in the browser of a victim user who visits a malicious third-party page. Such code would run within the security 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, address books, emails) to unauthorised third parties.
Proof of concept:
As kindly requested by Novell, ProCheckUp will delay publication of the PoC details to allow GroupWise customers time to apply the recommended security patches.
How to fix:
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