Cisco Security Advisory
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AV:N/AC:L/Au:S/C:N/I:N/A:C/E:F/RL:OF/RC:C
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A vulnerability in the Internet Message Access Protocol (IMAP) function of Cisco Unity Connection could allow an authenticated, remote attacker to cause 100 percent CPU utilization on the Cisco Unity Connection server, which may cause a denial of service (DoS) condition. The vulnerability is due to the processing of specific IMAP commands.
An attacker could exploit this vulnerability by issuing specific IMAP commands to the Cisco Unity Connection server. An exploit could allow the attacker to cause high CPU utilization on the Cisco Unity Connection server.
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit this vulnerability, an attacker must authenticate to the targeted device. This access requirement limits the possibility of a successful exploit.
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 ID CSCul49976 for a complete list of affected product versions.
Vulnerable Products
At the time this alert was first published, Cisco Unity Connection version 9.1(2) and prior were vulnerable. Later releases of Cisco Unity Connection 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 2014-Jan-10
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