QID 44097

Date Published: 2023-08-09

QID 44097: FortiOS - Buffer Overflow Vulnerability (FG-IR-20-083)

FortiOS is vulnerable to a stack-based buffer overflow in FortiGate.

Affected Versions:
FortiOS Versions 5.6.12 and below
FortiOS Versions 6.0.10 and below

QID Detection Logic (Authenticated):
Detection checks for vulnerable version of FortiOS.

Successful attack 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.

CVSS V3 rated as Medium - 5.4 severity.

CVSS V2 rated as Medium - 5.5 severity.

Solution

Fortinet has released patch addressing the vulnerability. For more information please refer to FG-IR-20-083

Vendor References

FG-IR-20-083 - www.fortiguard.com/psirt/FG-IR-20-083

CVEs related to QID 44097

CVE-2020-12820 |

Software Advisories

Advisory ID	Software	Component	Link
FG-IR-20-083			www.fortiguard.com/psirt/FG-IR-20-083

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