#VU63420 External Control of File Name or Path in Cisco Expressway and Cisco TelePresence Video Communication Server - CVE-2022-20806

Vulnerability identifier: #VU63420

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:L/E:U/U:Clear]

CVE-ID: CVE-2022-20806

CWE-ID: CWE-73

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Expressway
Server applications / Conferencing, Collaboration and VoIP solutions
Cisco TelePresence Video Communication Server
Server applications / Other server solutions

Vendor: Cisco Systems, Inc

Description

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

The vulnerability exists due to insufficient input validation of user-supplied command arguments. A remote administrator can obtain sensitive information and cause a denial of service (DoS) condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Expressway: 14.0

Cisco TelePresence Video Communication Server: 14.0

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-filewrite-bsFVwueV

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.