Cisco Security Advisory
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AV:N/AC:M/Au:N/C:N/I:P/A:N/E:F/RL:OF/RC:C
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A vulnerability in Cisco AnyConnect Secure Mobility Client and Cisco Host Scan could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the user of the client when AnyConnect is launched through the web interface.
The vulnerability is due to insufficient validation of a URL used to build a path for an applet in a Document Object Model. An attacker could exploit this vulnerability by convincing a user to click a malicious URL.
This vulnerability has been reported to Cisco by Jason Sinchak
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
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Customers are advised to consult Cisco bug IDs CSCup82990 and CSCuq80149 for the most complete list of affected product versions.
Vulnerable Products
At the time this alert was first published, the following Cisco products were vulnerable:
- Cisco AnyConnect Secure Mobility Client version 3.1(.02043) and prior
- Cisco HostScan Engine version 3.1(.05183) and prior
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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Administrators are advised to apply the appropriate updates.
Users should verify that unsolicited links are safe to follow.
For additional information about XSS attacks and the methods used to exploit these vulnerabilities, see the Cisco Applied Mitigation Bulletin Understanding Cross-Site Scripting (XSS) Threat Vectors.
Administrators are advised to monitor affected systems.
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Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com for assistance.
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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.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2015-Feb-10
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