Medium [CVE-2020-12812] Fortinet FortiOS: improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username
This medium-severity Fortinet advisory covers CVE-2020-12812 affecting FortiOS.
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Summary
An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.
Affected product named by the advisory: Fortinet FortiOS.
CISA Known Exploited Vulnerability
- Listed:
- Nov 3, 2021 · federal remediation due May 3, 2022
- Required action:
- Apply updates per vendor instructions.
- Ransomware use:
- Known
KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.
- FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
Mitigation checklist
- Upgrade to the following FortiOS version:6.4.1 or later 6.2.4 or later 6.0.10 or later
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
Discussion(0)
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