#VU57075 Insufficient Session Expiration in FortiClientEMS - CVE-2021-24019

Vulnerability identifier: #VU57075

Vulnerability risk: High

CVSSv4.0: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2021-24019

CWE-ID: CWE-613

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
FortiClientEMS
Other software / Other software solutions

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to insufficient session expiration issue. A remote non-authenticated attacker can reuse the unexpired admin user session IDs to gain admin privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiClientEMS: 6.2.0 - 6.4.2

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External links
https://www.fortiguard.com/psirt/FG-IR-20-072

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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 Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.