Vulnerability identifier: #VU47185

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12819

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiOS
Operating systems & Components / Operating system

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the processing of Link Control Protocol messages. A remote authenticated attacker can send a specially crafted LCP packet, trigger heap-based buffer overflow and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 5.6.0 - 5.6.12, 6.0.0 - 6.0.10, 6.2.0 - 6.2.4, 6.4.0 - 6.4.1

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External links
http://fortiguard.com/psirt/FG-IR-20-082

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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