QID 44080

Date Published: 2023-07-14

QID 44080: FortiOS - Denial of Service (DoS) Vulnerability (FG-IR-20-082)

A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiOS may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled.

Affected Versions:
FortiOS versions 5.6.12 and below.
FortiOS versions 6.0.10 and below.
FortiOS versions 6.2.4 and below.
FortiOS versions 6.4.1 and below.

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

Successful exploitation may lead to denial of service

CVSS V3 rated as High - 6.5 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

Fortinet has released patch addressing the vulnerability. For more information please refer to FG-IR-20-082

Vendor References

FG-IR-20-082 - www.fortiguard.com/psirt/FG-IR-20-082

CVEs related to QID 44080

CVE-2020-12819 |

Software Advisories

Advisory ID	Software	Component	Link
FG-IR-20-082			www.fortiguard.com/psirt/FG-IR-20-082

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