Format string error in FortiOS and FortiProxy fortiguard-resources CLI



Published: 2023-06-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-43953
CWE-ID CWE-134
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) Format string error

EUVDB-ID: #VU77182

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-2022-43953

CWE-ID: CWE-134 - Use of Externally-Controlled Format String

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the device.

The vulnerability exists due to a format string error in fortiguard-resources CLI command. A local user can pass specially crafted argument to the affected CLI command and execute arbitrary code on the target system.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.2.0 - 7.2.4

FortiProxy: 7.0.0 - 7.2.1

External links

http://fortiguard.fortinet.com/psirt/FG-IR-22-463


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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