Main Vulnerability Database Vulnerabilities #VU58631

Path traversal in FortiOS and FortiProxy - CVE-2021-41024

Published: December 7, 2021

Vulnerability identifier: #VU58631

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-41024

CWE-ID: CWE-22

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to input validation error when processing directory traversal sequences in the login page. A remote attacker can send a specially crafted HTTP GET request and read arbitrary files on the system.

Affected software

FortiOS
FortiProxy

How to mitigate CVE-2021-41024

Install update from vendor's website.

FortiOS - update to 7.0.2
FortiProxy - update to 7.0.1

External References

https://www.fortiguard.com/psirt/FG-IR-21-181

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