Main Vulnerability Database Vulnerabilities #VU62477

External Control of File Name or Path in Cisco Unified Communications Manager and Cisco Unified Communications Manager Session Management Edition - CVE-2022-20789

Published: April 21, 2022

Vulnerability identifier: #VU62477

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-20789

CWE-ID: CWE-73

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a user attacker to write arbitrary files.

The vulnerability exists due to improper restrictions applied to a system script in the software upgrade process. A remote administrator can use specially crafted variables during the execution of a system upgrade and write arbitrary files on the system.

Affected software

Cisco Unified Communications Manager
Cisco Unified Communications Manager Session Management Edition

How to mitigate CVE-2022-20789

Install updates from vendor's website.

Cisco Unified Communications Manager - addressed in versions 12.5(1)SU5, 14SU1
Cisco Unified Communications Manager Session Management Edition - addressed in versions 12.5(1)SU5, 14SU1

External References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-arb-write-74QzruUU

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