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CVE-2022-20814

HIGHCVSS 7.4/10EPSS 0.90%

Last modified

CVE-2022-20814 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. 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. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.4/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability
0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoTelepresence Video Communication Serverx8.1
CiscoTelepresence Video Communication Serverx8.1.1
CiscoTelepresence Video Communication Serverx8.1.2
CiscoTelepresence Video Communication Serverx8.2
CiscoTelepresence Video Communication Serverx8.2.1
CiscoTelepresence Video Communication Serverx8.2.2
CiscoTelepresence Video Communication Serverx8.5
CiscoTelepresence Video Communication Serverx8.5.1
CiscoTelepresence Video Communication Serverx8.5.2
CiscoTelepresence Video Communication Serverx8.5.3
CiscoTelepresence Video Communication Serverx8.6
CiscoTelepresence Video Communication Serverx8.6.1
CiscoTelepresence Video Communication Serverx8.7
CiscoTelepresence Video Communication Serverx8.7.1
CiscoTelepresence Video Communication Serverx8.7.2
CiscoTelepresence Video Communication Serverx8.7.3
CiscoTelepresence Video Communication Serverx8.8
CiscoTelepresence Video Communication Serverx8.8.1
CiscoTelepresence Video Communication Serverx8.8.2
CiscoTelepresence Video Communication Serverx8.8.3
CiscoTelepresence Video Communication Serverx8.9
CiscoTelepresence Video Communication Serverx8.9.1
CiscoTelepresence Video Communication Serverx8.9.2
CiscoTelepresence Video Communication Serverx8.10.0
CiscoTelepresence Video Communication Serverx8.10.1
CiscoTelepresence Video Communication Serverx8.10.2
CiscoTelepresence Video Communication Serverx8.10.3
CiscoTelepresence Video Communication Serverx8.10.4
CiscoTelepresence Video Communication Serverx8.11.0
CiscoTelepresence Video Communication Serverx8.11.1
CiscoTelepresence Video Communication Serverx8.11.2
CiscoTelepresence Video Communication Serverx8.11.3
CiscoTelepresence Video Communication Serverx8.11.4
CiscoTelepresence Video Communication Serverx12.5.0
CiscoTelepresence Video Communication Serverx12.5.1
CiscoTelepresence Video Communication Serverx12.5.2
CiscoTelepresence Video Communication Serverx12.5.3
CiscoTelepresence Video Communication Serverx12.5.4
CiscoTelepresence Video Communication Serverx12.5.5
CiscoTelepresence Video Communication Serverx12.5.6
CiscoTelepresence Video Communication Serverx12.5.7
CiscoTelepresence Video Communication Serverx12.5.8
CiscoTelepresence Video Communication Serverx12.5.9
CiscoTelepresence Video Communication Serverx12.6.0
CiscoTelepresence Video Communication Serverx12.6.1
CiscoTelepresence Video Communication Serverx12.6.2
CiscoTelepresence Video Communication Serverx12.6.3
CiscoTelepresence Video Communication Serverx12.6.4
CiscoTelepresence Video Communication Serverx12.7.0
CiscoTelepresence Video Communication Serverx12.7.1

Showing 50 of 60 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2022-20814?
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.
How severe is CVE-2022-20814?
CVE-2022-20814 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.
How do I fix CVE-2022-20814?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-20814?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST