On 21 January 2009, Cisco has published two new security advisories, which can be exploited by malicious people to conduct a DOS attack or a Remote control attack.
The two vulnerabilities are: Cisco Security Manager Vulnerability and Cisco Unified Communications Manager CAPF Denial of Service Vulnerability.
1) Cisco Security Manager Vulnerability
Cisco Security Manager contains a vulnerability when it is used with Cisco IPS Event Viewer (IEV) that results in open TCP ports on both the Cisco Security Manager server and IEV client. An unauthenticated, remote attacker could leverage this vulnerability to access the MySQL databases or IEV server. Cisco has released free software updates that address this vulnerability. A workaround is also available to mitigate this vulnerability.
All 3.1 and 3.2 versions prior to 3.2.2 of Cisco Security Manager are affected by this vulnerability. Cisco IEV is installed with Cisco Security Manager by default, but the vulnerability is not exposed until IEV has been launched.
Cisco Security Manager is an enterprise-class management application that is designed to configure firewall, VPN, and intrusion prevention security services on Cisco network and security devices. As part of Cisco Security Manager installation, the Cisco IEV is installed by default. The IEV is a Java-based application that allows users to view and manage alerts for up to five sensors, including the ability to report top alerts, attackers, and victims over a specified number of hours or days. Users can connect to and view alerts in real time or via imported log files, configure filters and views to help manage alerts, and import and export event data for further analysis.
A vulnerability exists in the Cisco Security Manager server. When the IEV is launched, it opens several remotely available TCP ports on the Cisco Security Manager server and client. These ports could allow remote, unauthenticated root access to the IEV database and server. When IEV is closed, it closes open ports on the Cisco Security Manager client that launched the IEV but fails to close open ports on the server. If the IEV has never been used on the system, the Cisco Security Manager server is not vulnerable.
The IEV database contains events that are collected from Cisco Intrusion Prevention System (IPS) devices. The IEV server allows an unauthenticated user to add, delete, or modify the devices that are added into the IEV.
Successful exploitation of this vulnerability may result in remote root access to the IEV database or to the IEV Server. Upon launching the IEV remotely accessible ports are opened on the Cisco Security Manager server and the client where the IEV is launched. When the IEV application is closed these ports are subsequently closed on the client however remain open on the Cisco Security Manager server.
2) Cisco Unified Communications Manager CAPF Denial of Service Vulnerability
Cisco Unified Communications Manager, formerly Cisco CallManager, contains a denial of service (DoS) vulnerability in the Certificate Authority Proxy Function (CAPF) service. Exploitation of this vulnerability could cause an interruption in voice services. The CAPF service is disabled by default. Cisco has released free software updates that address this vulnerability. Workarounds available that mitigate this vulnerability are available.
These products are vulnerable:
- Cisco Unified Communications Manager 5.x versions prior to 5.1(3e)
- Cisco Unified Communications Manager 6.x versions prior to 6.1(3)
The CAPF service of Cisco Unified Communications Manager versions 5.x and 6.x contain a vulnerability when handling malformed input that may result in a DoS condition. The CAPF service is disabled by default; however, if it is enabled, the CAPF service listens by default on TCP port 3804 and the listening port is configurable by the user. There is a workaround for this vulnerability. This vulnerability is fixed in Cisco Unified Communications Manager versions 5.1(3e) and 6.1(3). This vulnerability is documented in Cisco Bug ID CSCsq32032 and has been assigned Common Vulnerabilities and Exposures (CVE) identifier CVE-2009-0057.
Successful exploitation of the vulnerability described in this advisory may result in the interruption of voice services.