QID 43939

Date Published: 2022-11-03

QID 43939: FortiOS - Integer Overflow in dhcpd daemon Vulnerability (FG-IR-21-155)

An integer overflow / wraparound vulnerability [CWE-190] in the FortiOS, dhcpd daemon may allow an unauthenticated and network adjacent attacker to crash the dhcpd deamon, resulting in potential denial of service.

Affected Products:
FortiOS version 7.0.3 and below.
FortiOS version 6.4.8 and below.
FortiOS version 6.2.10 and below.
FortiOS version 6.0.x.

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

Vulnerable version may allow an unauthenticated and network adjacent attacker to crash the dhcpd daemon, resulting in potential denial of service.

CVSS V3 rated as Medium - 4.3 severity.

CVSS V2 rated as Medium - 3.3 severity.

Solution

Vendor has released fixes to address this vulnerability
For more details refer advisory FG-IR-21-155

Vendor References

FG-IR-21-155 - www.fortiguard.com/psirt/FG-IR-21-155

CVEs related to QID 43939

CVE-2021-42755 |

Software Advisories

Advisory ID	Software	Component	Link
FG-IR-21-155			www.fortiguard.com/psirt/FG-IR-21-155

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