Cisco Security Advisory
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AV:N/AC:M/Au:N/C:N/I:P/A:N/E:POC/RL:OF/RC:C
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A vulnerability in Cisco Jabber for Windows could allow an unauthenticated, remote attacker to gain a man-in-the-middle position.
The vulnerability is due to a failure to validate server certificates when negotiating a connection over Secure Sockets Layer (SSL). An attacker could exploit this vulnerability by intercepting and altering the connection.
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit the vulnerability, the attacker may need access trusted, internal networks to convince a targeted user to accept a crafted certificate. This access requirement could reduce the likelihood of a successful exploit.
Cisco indicates through the CVSS score that proof-of-concept exploit code exists; however, the code is not known to be publicly available.
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Customers are advised to consult Cisco bug ID CSCug30280 for the most complete list of affected product versions.
Vulnerable Products
At the time this alert was first published, Cisco Jabber for Windows versions 9.2.1 and prior were vulnerable. Later releases of Cisco Jabber for Windows may also be vulnerable.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.
Administrators are advised to allow only trusted users to have network access.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
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 2013-Sep-05
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