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Date: Tue, 10 Dec 2013 15:32:12 GMT From: zoczus@...il.com To: bugtraq@...urityfocus.com Subject: LiveZilla 5.1.1.0 Stored XSS in operator clients Author: Jakub Zoczek [zoczus@...il.com] CVE Reference: CVE-2013-7003 Product: LiveZilla Vendor: LiveZilla GmbH [http://livezilla.net] Affected version: 5.1.1.0 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 5.1.1.0 is prone to multiple Stored Cross-Site Scripting issues in Webbased Operator Client and LiveZilla Client. Attacker can put payloads in fields like "full name" , "company", or create crafted filename to exploit this vulnerability. 0x03 Proof of Concepts Name and Surname variant: My name is Jakub and this is looong username <img src="a" onerror="alert(document.cookie)">h Operator who will try to chat with attacker with this name will get javascript code executed. Screenshots: http://postimg.org/image/orvwl36on/ http://postimg.org/image/uhh72ij6f/ http://postimg.org/image/6f0d7n2jb/ http://postimg.org/image/6hk8uh66v/ http://postimg.org/image/7z5p61axj/ Uploaded filename variant: If attacker (while chatting) will try to upload specially crafted file with name: c"><img src="a" onerror="alert(document.cookie)">hh.jpg - then operator would get javascript code execution without any interaction. Screenshots: http://postimg.org/image/kp9xj4ivr/ http://postimg.org/image/pqhbkhqc7/ http://postimg.org/image/7c6sgie1j/ 0x04 Fix Vulnerabilities was fixed in LiveZilla 5.1.2.0 version. 0x05 Timeline 21.11.2013 - Vendor notified 01.12.2013 - Ping 02.12.2013 - Vendor responded with information about planing fix 06.12.2013 - Fixed version released 10.12.2013 - Public Disclosure
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