CVE-2021-42755

Severity CVSS v4.0:

Pending analysis

Type:

CWE-190 Integer Overflow or Wraparound

Publication date:

18/07/2022

Last modified:

18/01/2024

Description

An integer overflow / wraparound vulnerability [CWE-190] in FortiSwitch 7.0.2 and below, 6.4.9 and below, 6.2.x, 6.0.x; FortiRecorder 6.4.2 and below, 6.0.10 and below; FortiOS 7.0.2 and below, 6.4.8 and below, 6.2.10 and below, 6.0.x; FortiProxy 7.0.0, 2.0.6 and below, 1.2.x, 1.1.x, 1.0.x; FortiVoiceEnterprise 6.4.3 and below, 6.0.10 and below dhcpd daemon may allow an unauthenticated and network adjacent attacker to crash the dhcpd deamon, resulting in potential denial of service.

Impact

Vector 3.x

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS v3.1 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

Base Score 3.x

4.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:fortinet:fortiproxy::::::::	1.0.0 (including)	1.0.7 (including)
cpe:2.3:a:fortinet:fortiproxy::::::::	1.1.0 (including)	1.1.6 (including)
cpe:2.3:a:fortinet:fortiproxy::::::::	1.2.0 (including)	1.2.13 (including)
cpe:2.3:a:fortinet:fortiproxy::::::::	2.0.0 (including)	2.0.6 (including)
cpe:2.3:a:fortinet:fortiproxy:7.0.0:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.0:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.1:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.2:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.3:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.4:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.5:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.6:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.7:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.8:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.10:::::::*

To consult the complete list of CPE names with products and versions, see this page

References to Advisories, Solutions, and Tools

https://fortiguard.com/psirt/FG-IR-21-155

CPE	From	Up to
cpe:2.3:a:fortinet:fortiproxy::::::::	1.0.0 (including)	1.0.7 (including)
cpe:2.3:a:fortinet:fortiproxy::::::::	1.1.0 (including)	1.1.6 (including)
cpe:2.3:a:fortinet:fortiproxy::::::::	1.2.0 (including)	1.2.13 (including)
cpe:2.3:a:fortinet:fortiproxy::::::::	2.0.0 (including)	2.0.6 (including)
cpe:2.3:a:fortinet:fortiproxy:7.0.0:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.0:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.1:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.2:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.3:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.4:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.5:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.6:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.7:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.8:::::::*
cpe:2.3:a:fortinet:fortivoice:5.3.10:::::::*