CVE-2020-12820

State: Published
Severity: 5.4 Medium
Published: Dec 19, 2024
Updated: Dec 20, 2024
Reserved: May 12, 2020

Description

Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon (fcnacd) and potentially execute arbitrary code via requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:U/RL:X/RC:X	fortinet

Weaknesses

CWE-121 Execute unauthorized code or commands

Affected Products

Product	Versions
FortiOSFortinet	6.0.0 through 6.0.10Affected 5.6.0 through 5.6.12Affected

References

https://fortiguard.fortinet.com/psirt/FG-IR-20-083

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