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LiveZilla 5.1.0.0 Reflected XSS in translations



Author: Jakub Zoczek [zoczus@xxxxxxxxx]
CVE Reference: CVE-2013-7002
Product: LiveZilla 
Vendor: LiveZilla GmbH [http://livezilla.net]
Affected version: 5.1.0.0
Severity: Medium
CVSSv2 Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N) 
Status: Fixed


0x01 Background

LiveZilla, the widely-used and trusted Live Help and Live Support System.

0x02 Description

LiveZilla in version 5.1.0.0 is prone to Reflected Cross-Site Scripting issue in translation PHP script used to generate JSON with connections between origin and destination languages. Content type is text/html and g_language GET variable is displayed without sanitization, which make the script vulnerable.

0x03 Proof of Concept

http://hostname/livezilla/mobile/php/translation/index.php?g_language=f";><img src=a onerror=alert('XSS')>h

0x04 Fix

Vulnerability was fixed in LiveZilla 5.1.1.0 version.

0x05 Timeline

20.11.2013 - Vendor notified
21.11.2013 - Fix released, vendor responded 
09.12.2013 - Public Disclosure