Code Injection in FortiOS - CVE-2021-36169

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Main Vulnerability Database Vulnerabilities #VU56380

Code Injection in FortiOS - CVE-2021-36169

Published: September 7, 2021


Vulnerability identifier: #VU56380
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-36169
CWE-ID: CWE-94
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
FortiOS
Software vendor:
Fortinet, Inc

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper input validation within the debug functionality in FortiGate. A local privileged user can execute unauthorized code or commands via specific
chains of `print str` and `cmd mem` cli commands to, respectively, read and write hexadecimal values to any memory address.


Remediation

Install updates from vendor's website.

External links