#VU61979 Information disclosure in FortiClient (Linux) - CVE-2021-43205

Vulnerability identifier: #VU61979

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-43205

CWE-ID: CWE-200

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
FortiClient (Linux)
Client/Desktop applications / Software for system administration

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker on the local network can gain unauthorized access to confighandler webserver via external binaries

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiClient (Linux): 6.2.0 - 7.0.2

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External links
https://fortiguard.fortinet.com/psirt/FG-IR-21-226

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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