Integer Overflow Vulnerability in Fortinet Products
CVE-2021-42755

4.3MEDIUM

Key Information:

Vendor

Fortinet
Status
Fortinet Fortiswitch, Fortirecorder, Fortivoiceenterprise, FortiOS, Fortiproxy
Vendor
CVE Published:
18 July 2022

What is CVE-2021-42755?

An integer overflow vulnerability in several Fortinet products, including FortiSwitch, FortiRecorder, FortiOS, FortiProxy, and FortiVoiceEnterprise, may allow an unauthenticated network-adjacent attacker to exploit the dhcpd daemon, potentially resulting in a denial of service. This could enable attackers to crash the service, disrupting network activities.

Affected Version(s)

Fortinet FortiSwitch, FortiRecorder, FortiVoiceEnterprise, FortiOS, FortiProxy 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

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-42755 : Integer Overflow Vulnerability in Fortinet Products