A vulnerability in the web bridge that offers video via a web interface of Cisco Meeting Server Software, formerly Acano Conferencing Server, could allow an unauthenticated, remote attacker to conduct a persistent cross-site scripting (XSS) attack against a user of the web interface of an affected system.
The vulnerability is due to improper input validation of certain parameters that are passed to an affected device via an HTTP request. An attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected management interface or allow the attacker to access sensitive browser-based information.
Additional information about XSS attacks and potential mitigations can be found in the following resources:
- OWASP Attack Reference: Cross-site Scripting (XSS)
- Cisco Applied Mitigation Bulletin: Understanding Cross-Site Scripting (XSS) Threat Vectors
This advisory is available at the following link: https://sec.cloudapps.cisco.comsecurity/center/content/CiscoSecurityAdvisory/cisco-sa-20160714-ms
There are no workarounds that address this vulnerability.
Cisco provides information about fixed software in Cisco bugs, which are accessible through the Cisco Bug Search Tool.
When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to upgrade contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Version Description Section Status Date 1.1 Clarified the source of the vulnerability and added information about fixed releases. Summary, Vulnerable Products Final 2016-August-05 1.0 Initial public release. — Final 2016-July-14
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