Detections
Analytics
Cisco Expressway Series and Cisco TelePresence VCS Improper Certificate Validation Vulnerability (cisco-sa-expressway-csrf-sqpsSfY6)
high Nessus Plugin ID 165761
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Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco Expressway-C and Cisco TelePresence VCS devices are affected by a vulnerability in the certificate validation that 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.Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCwa25097, CSCwa25108See Also
Plugin Details
Severity: High
ID: 165761
File Name: cisco-sa-expressway-CSCwa25108.nasl
Version: 1.6
Type: combined
Family: CISCO
Published: 10/7/2022
Updated: 6/16/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: High
Base Score: 7.1
Temporal Score: 5.3
Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N
CVSS Score Source: CVE-2022-20814
CVSS v3
Risk Factor: High
Base Score: 7.4
Temporal Score: 6.4
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:cisco:telepresence_video_communication_server_software, cpe:/h:cisco:telepresence_video_communication_server
Required KB Items: Cisco/TelePresence_VCS/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 10/5/2022
Vulnerability Publication Date: 10/5/2022
Reference Information
CVE: CVE-2022-20814