Authenticated path traversal in FortiWeb

1) Path traversal

EUVDB-ID: #VU105617

Risk: Low

CVSSv4.0: 4.6 [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-2024-55597

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

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

The vulnerability exists due to input validation error when processing directory traversal sequences within the cgi_xmlprotection_xmlschemafile_post() function in FortiWeb API endpoint. A remote privileged user can write files to an arbitrary location on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiWeb: 7.0.0 - 7.6.0

CPE2.3

• cpe:2.3:a:fortinet:fortiweb:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiweb:7.0.9:*:*:*:*:*:*:*

External links

https://fortiguard.fortinet.com/psirt/FG-IR-24-439
https://www.zerodayinitiative.com/advisories/ZDI-25-202/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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