Description
A vulnerability in the certificate validation of Cisco Expressway-C and Cisco TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data. The vulnerability is due to a lack of validation of the SSL server certificate that an affected device receives when it establishes a connection to a Cisco Unified Communications Manager device. An attacker could exploit this vulnerability by using a man-in-the-middle technique to intercept the traffic between the devices, and then using a self-signed certificate to impersonate the endpoint. A successful exploit could allow the attacker to view the intercepted traffic in clear text or alter the contents of the traffic. Note: Cisco Expressway-E is not affected by this vulnerability.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway
Default version status: unknown
X8.11.2affectedX8.6affectedX8.11.3affectedX8.2.2affectedX8.8.3affectedX8.11.0affectedX12.5.2affectedX8.1.1affectedX8.9affectedX12.5.1affectedX12.5.6affectedX8.7.3affectedX12.6.0affectedX8.11.1affectedX8.5affectedX8.9.1affectedX8.10.2affectedX8.8.2affectedX8.5.3affectedX8.1affectedX8.9.2affectedX8.11.4affectedX12.5.4affectedX8.8.1affectedX8.2.1affectedX8.5.1affectedX8.6.1affectedX8.1.2affectedX8.8affectedX8.10.0affectedX12.5.3affectedX8.10.1affectedX12.5.7affectedX8.10.3affectedX8.7.1affectedX8.2affectedX12.5.8affectedX8.7affectedX8.5.2affectedX12.5.9affectedX12.5.0affectedX8.10.4affectedX8.7.2affectedX12.5.5affectedX12.6.1affectedX12.6.2affectedX12.6.3affectedX12.6.4affectedX12.7.0affectedX12.7.1affectedX14.0.0affectedX14.0.1affectedX14.0.2affectedX14.0.3affectedX14.0.4affectedX14.0.5affectedX14.0.6affectedX14.0.7affectedX14.0.8affectedX14.0.9affected
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-csrf-sqpsSfY6 ↗
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt ↗
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6 ↗
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cdp-wnALzvT2 ↗