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[R1] Cisco Prime Network Control System (NCS) / Wireless Control System (WCS) login.jsp requestUrl Parameter Reflected XSS

Medium
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Synopsis

Cisco Prime Network Control System (NCS) and Wireless Control System (WCS) contains a flaw that allows a reflected cross-site scripting (XSS) attack. This flaw exists because the login.jsp script does not validate input to the 'requestUrl' GET parameter before returning it to users. This may allow a context-dependent attacker to create a specially crafted request that would execute arbitrary script code in a user's browser session within the trust relationship between their browser and the server.

Solution

This has apparently been fixed in a subsequent version of each product. Tenable is working with Cisco to determine exact versions.

Proof of Concept

https://[target]:8082/login.jsp?requestUrl='><script>alert('cross site scripting');</script><div id='

Additional References

http://www.kb.cert.org/vuls/id/830316
https://tools.cisco.com/quickview/bug/CSCud18375

Disclosure Timeline

2012-03-19 - Reported to Cisco PSIRT, who responds and assigns PSIRT-1173906751
2012-04-12 - Independently found by 2nd engineer, reported to Cisco , assigned PSIRT-0669566385
2015-09-14 - Contacted Cisco PSIRT for update on solution (believed to exist, but not obviously public)

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Risk Information

CVE ID: CVE-2012-5990
Nessus Plugin ID: 69057
Tenable Advisory ID
TRA-2013-07
Credit

Nicholas Miles, Tenable Network Security

CVSSv2 Base / Temporal Score
4.3 / 3.9
CVSSv2 Vector
(AV:N/AC:M/Au:N/C:N/I:P/A:N/E:POC/RL:U/RC:C)
Additional Keywords
CSCud18375
CWE-79
Affected Products
Cisco Wireless Control System (WCS) 7.0.230.0
Cisco Prime Network Control System (NCS) 2.0
Risk Factor
Medium

Advisory Timeline

2015-09-14 - [R1] Initial Release
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