Watchguard Server Center 11.7.4 Cross Site Scripting

Credit: Julien Ahrens
Risk: Low
Local: No
Remote: Yes

CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

Watchguard Server Center v11.7.4 Multiple Non-Persistent Cross-Site Scripting Vulnerabilities RCE Security Advisory 1. ADVISORY INFORMATION ----------------------- Product: Watchguard Server Center Vendor URL: Type: Cross-Site Scripting [CWE-79] Date found: 2013-09-11 Date published: 2013-10-21 CVSSv2 Score: 3,5 (AV:N/AC:M/Au:S/C:N/I:P/A:N)) CVE: CVE-2013-5702 2. CREDITS ---------- These vulnerabilities were discovered and researched by Julien Ahrens from RCE Security. 3. VERSIONS AFFECTED -------------------- Watchguard Server Center v11.7.4 Update #1 and other older versions may be affected too. 4. VULNERABILITY DESCRIPTION ---------------------------- Multiple Non-Persistent Cross-Site Scripting vulnerabilities have been identified in the Watchguard Server Center v11.7.4 Update #1. Due to improper input - validation of the following GET parameters, an attacker could temporarily inject arbitrary code with required authenticated user interaction into the context of the Watchguard Server Center / current browser session. Successful exploitation of these vulnerabilities allows for example cookie theft, session hijacking or client side context manipulation. Vulnerable modules and parameters: +/log/device?sn=random&cluster_id=<XSS>&l_t=tr&name=random +/log/device?sn=random&cluster_id=random&l_t=tr&name=<XSS> +/log/log_html_distribution?sn=random&cluster_id=random&name=<XSS> 5. PROOF-OF-CONCEPT (CODE / EXPLOIT) ------------------------------------<script>alert('')</script> 6. SOLUTION ----------- Update to Watchguard Server Center v11.8 which fixes these issues 7. REPORT TIMELINE ------------------ 2013-09-05: Discovery of the vulnerability 2013-09-05: MITRE assigns CVE-2013-5702 for this issue 2013-09-11: RCE Security sends vulnerability details to Watchguard via mail with disclosure date set to 26. September 2013 2013-09-12: Watchguard ACKs all reported flaws, assigns bug ids: #76179 and #76363 and shows possible mitigation factors 2013-09-26: RCE Security provides a PoC bypassing the mitigation factors and extends disclosure date to 17. October 2013 2013-09-30: RCE Security asks for status update 2013-10-10: Watchguard releases v11.8 which fixes all reported vulnerabilities 2013-10-21: Responsible Disclosure 8. REFERENCES -------------


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