Path traversal in Cisco Systems, Inc products - CVE-2023-20234

Vulnerability identifier: #VU79939

CSH Severity: Low

CVSSv4.0: 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/E:U/U:Clear

CVE-ID: CVE-2023-20234

CWE-ID: CWE-22

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Cisco FXOS
Firepower 1000 Series Appliances
Firepower 2100 Series Security Appliances
Firepower 4100 Series Security Appliances
Firepower 9300 Series Security Appliances
Secure Firewall 3100

Software vendor:
Cisco Systems, Inc

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the CLI. A remote administrator can send a specially crafted HTTP request and overwrite arbitrary files on the system.

Install update from vendor's website.

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-arbitrary-file-BLk6YupL