CVE-2021-34761 MEDIUM

CVE-2021-34761: Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability

Vendor Cisco
Product Cisco Firepower Threat Defense Software
Weakness CWE-73
Published October 27, 2021
Last update November 7, 2024

CVSS base score

4.4/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

What the vulnerability does

01Description

A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.

Key dates

02Disclosure timeline

October 27, 2021 CVE published
November 7, 2024 Record updated