Integrity checks bypass in FortiOS and FortiProxy VM



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-28002
CWE-ID CWE-354
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) Improper validation of integrity check value

EUVDB-ID: #VU83246

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28002

CWE-ID: CWE-354 - Improper Validation of Integrity Check Value

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper validation of integrity check value in FortiOS and FortiProxy VMs. A local admin user can boot a malicious image on the device and bypass the filesytem integrity check in place.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.0 - 7.2.3

FortiProxy: 2.0.0 - 7.2.7

CPE2.3 External links

http://fortiguard.com/psirt/FG-IR-22-396


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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