Buffer overflow in Fortinet FortiProxy



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-43072
CWE-ID CWE-119
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		FortiProxy
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU64934

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-43072

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within "execute restore image" and "execute certificate remote" CLI commands. A local user can trigger buffer overflow and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FortiProxy: 1.0.0 - 7.0.3

CPE2.3 External links

http://fortiguard.fortinet.com/psirt/FG-IR-21-206


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.

How the attacker can exploit this vulnerability?

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

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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