October 2, 2019
Multiple Cisco Unified Communications Products are prone to a cross-site request-forgery vulnerability because the application does not properly validate HTTP requests. Exploiting this issue may allow a remote attacker to perform certain unauthorized actions in the context of the affected user. Other attacks are also possible. This issue is being tracked by Cisco bug IDs CSCvo42306, CSCvo91541, CSCvo99233.
- Cisco Unified Communications Manager (UCM)
- Cisco Unified Communications Manager 10.5(2)
- Cisco Unified Communications Manager 11.0
- Cisco Unified Communications Manager 11.5
- Cisco Unified Communications Manager 12.0
- Cisco Unified Communications Manager 12.5
- Cisco Unified Communications Manager IM and Presence Service 10.5(2)
- Cisco Unified Communications Manager IM and Presence Service 11.0
- Cisco Unified Communications Manager IM and Presence Service 11.5
- Cisco Unified Communications Manager IM and Presence Service 12.0
- Cisco Unified Communications Manager IM and Presence Service 12.5
- Cisco Unity Connection 10.5(2)
- Cisco Unity Connection 11.0
- Cisco Unity Connection 11.5
- Cisco Unity Connection 12.0
- Cisco Unity Connection 12.5
Block external access at the network boundary, unless external parties require service.
If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.
Do not follow links provided by unknown or untrusted sources.
Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.
Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: firstname.lastname@example.org.
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