LiveZilla version 5.1.2.0 suffers from multiple cross site scripting vulnerabilities.
2cf18894a3875b9c1aadaad35adb2250a1d6a3890f83fb1d3bcd6561d6c76c5c
Author: Jakub Zoczek [zoczus@gmail.com]
CVE Reference: CVE-2013-7032
Product: LiveZilla
Vendor: LiveZilla GmbH [http://livezilla.net]
Affected version: 5.1.2.0
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 5.1.2.0 is prone to multiple stored cross-site scripting vulnerabilities in Webbased Operator Client. Attacker is able to execute arbitrary javascript code in context of operator browser by providing xss payloads into unfiltered fields - details below.
0x03 Proof of Concept
- File Names - this issue is really similar to CVE-2013-7003. LiveZilla fixed it by escaping displayed file name when customer want send it to operator. Unfortunately it is unescaped after succesful upload.
- Also - after upload LiveZilla creates 'resources' with those files. Filenames are escaped properly there, but names of customers don't. We can use simple, widely-known XSS payloads to exploit this vulnerability.
0x04 Fix
Vulnerability was fixed in LiveZilla 5.1.2.1 version.
0x05 Timeline
08.12.2013 - Vendor notified
09.12.2013 - Vendor responded with informations about planned release
10.12.2013 - Version 5.1.2.1 released
15.12.2013 - Public Disclosure