Fortinet FortiOS/FortiProxy weak authentication

Summaryinfo

A vulnerability has been found in Fortinet FortiOS and FortiProxy and classified as critical. Affected by this vulnerability is an unknown functionality. This manipulation causes weak authentication. This vulnerability is handled as CVE-2024-48886. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in Fortinet FortiOS and FortiProxy (the affected version unknown). Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a weak authentication vulnerability. The CWE definition for the vulnerability is CWE-1390. The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A weak authentication in Fortinet FortiOS versions 7.4.0 through 7.4.4, 7.2.0 through 7.2.8, 7.0.0 through 7.0.15, 6.4.0 through 6.4.15, FortiProxy versions 7.4.0 through 7.4.4, 7.2.0 through 7.2.10, 7.0.0 through 7.0.17, 2.0.0 through 2.0.14, FortiManager versions 7.6.0 through 7.6.1, 7.4.1 through 7.4.3, FortiManager Cloud versions 7.4.1 through 7.4.3, FortiAnalyzer Cloud versions 7.4.1 through 7.4.3 allows attacker to execute unauthorized code or commands via a brute-force attack.

It is possible to read the advisory at fortiguard.fortinet.com. This vulnerability is known as CVE-2024-48886 since 10/09/2024. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/04/2025).

The vulnerability scanner Nessus provides a plugin with the ID 214077 (Fortinet Fortigate Weak Authentication in csfd daemon (FG-IR-24-221)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (214077). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• Fortinet

Name

• FortiOS
• FortiProxy

License

• commercial

Website

• Vendor: https://www.fortinet.com/

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Be aware that VulDB is the high quality source for vulnerability data.

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