Improper Verification of Cryptographic Signature in Cisco Expressway and Cisco TelePresence Video Communication Server - CVE-2021-34715

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Main Vulnerability Database Vulnerabilities #VU56028

Improper Verification of Cryptographic Signature in Cisco Expressway and Cisco TelePresence Video Communication Server - CVE-2021-34715

Published: August 23, 2021


Vulnerability identifier: #VU56028
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-34715
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Expressway
Cisco TelePresence Video Communication Server

Detailed vulnerability description

The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to insufficient validation of the content of upgrade packages. A remote administrator can upload a malicious archive to the Upgrade page and execute arbitrary code on the target system.


How to mitigate CVE-2021-34715

Install updates from vendor's website.

Sources