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OpenVAS Greenbone Security Assistant Cross Site Scripting

OpenVAS Greenbone Security Assistant Cross Site Scripting
Posted Jan 20, 2016
Authored by Sebastian Neef

OpenVAS Greenbone Security Assistant versions 6.x below 6.0.8 suffer from a cross site scripting vulnerability.

tags | advisory, xss
advisories | CVE-2016-1926
MD5 | 1a59a781c3efcec650c13bb74e014137

OpenVAS Greenbone Security Assistant Cross Site Scripting

Change Mirror Download
Vulnerability information
===============
Date: 13th January 2016
Product: Greenbone Security Assistant ≥ 6.0.0 and < 6.0.8
Vendor: OpenVAS <http://www.openvas.org/>
Risk: Low, CVSS 1.9 (AV:A/AC:M/Au:M/C:P/I:N/A:N)

Description
===============
It has been identified that Greenbone Security Assistant (GSA) is vulnerable to cross site scripting due to a improper handling of the parameters of the get_aggregate command. Given the attacker has access to a session token of the browser session, the cross site scripting can be executed. OpenVAS-7 is not affected.

Fix
===============
OpenVAS recommends that the publicly available patches are applied. If building from source, then patches r24056 (for Greenbone Security Assistant 6.0.x of OpenVAS-8) should be obtained from the OpenVAS SVN repository. For trunk (beta status of OpenVAS-9) this was solved with r24055.

A fresh tarball containing the latest stable release of Greenbone Security Assistant 6.0 (OpenVAS-8) can be obtained from:

http://wald.intevation.org/frs/download.php/2283/greenbone-security-assistant-6.0.8.tar.gz

In the event that OpenVAS has been supplied as part of a distribution then the vendor or organisation concerned should be contacted for a patch.

Full advisory
===============
See [1].

Timeline
===============
- 07.01.2016: XSS discovered and reported to vendor.
- 08.01.2016, 08:00: Acknowledgement from vendor and info that fix is already in progress.
- 08.01.2016, 17:30: Fix ready, QA and testing needed
- 09.01.2016: Update released for Greenbone Security Manager: Advisory GBSA 2016-01 [2]
- 13.01.2016: Update released OpenVAS: Advisory OVSA 20160113 [1]
- 18.01.2016: CVE-2016-1926 assigned by MITRE
- 20.01.2016: Blogpost released [3]

References
===============
- [1] http://www.openvas.org/OVSA20160113.html
- [2] http://www.greenbone.net/technology/gbsa2016-01.html
- [3] https://en.internetwache.org/cve-2016-1926-xss-in-the-greenbone-security-assistant-20-01-2016/

Regards,
Sebastian Neef

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