Weak key derivation for backup file in FortiOS and FortiProxy



Published: 2024-06-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-21754
CWE-ID CWE-916
Exploitation vector Local
Public exploit N/A
Vulnerable software
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FortiOS
Operating systems & Components / Operating system

FortiProxy
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use of Password Hash With Insufficient Computational Effort

EUVDB-ID: #VU91783

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-21754

CWE-ID: CWE-916 - Use of Password Hash With Insufficient Computational Effort

Exploit availability: No

Description

The vulnerability allows a local user to decrypt backup files.

The vulnerability exist due to usage of a weak key derivation for backup file. A local user with super-admin profile and CLI access can decrypting the backup file.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.4.0 - 7.4.3

FortiProxy: 2.0.0 - 7.4.2

External links

http://fortiguard.fortinet.com/psirt/FG-IR-23-423


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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