QID 38850

Date Published: 2021-10-21

QID 38850: Cisco Expressway Series and TelePresence Video Communication Server Image Verification Vulnerability (cisco-sa-ewver-c6WZPXRx)

A vulnerability in the image verification function of Cisco Expressway Series and
Cisco TelePresence Video Communication Server (VCS) could
allow an authenticated, remote attacker to execute code with internal user privileges on the underlying operating system.

Affected Products
Cisco Expressway Series and Cisco TelePresence VCS if they were running a release
from x8.8 Prior to 14.0.3 release. Note: This vulnerability was introduced when support for
validation of SHA512 checksums was introduced in Release X8.8.

QID Detection Logic (Unauthenticated):
The check matches version of Cisco TelePresence Video Communication Server Expressway on the exposed banner information under the SIP banner.

A successful exploit could allow the attacker to execute code with user-level privileges (the _nobody account) on the underlying operating system.

CVSS V3 rated as High - 7.2 severity.

CVSS V2 rated as Critical - 9 severity.

Solution

Customers are advised to refer to cisco-sa-ewver-c6WZPXRx for more information.

Vendor References

cisco-sa-ewver-c6WZPXRx - tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewver-c6WZPXRx

CVEs related to QID 38850

CVE-2021-34715 |

Software Advisories

Advisory ID	Software	Component	Link
cisco-sa-ewver-c6WZPXRx			tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewver-c6WZPXRx

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