What is the severity of FG-IR-21-155?

The severity of FG-IR-21-155 is classified as critical due to its potential for denial of service.

How do I fix FG-IR-21-155?

To fix FG-IR-21-155, update your affected Fortinet devices to the latest firmware version provided by Fortinet.

Who is affected by FG-IR-21-155?

FG-IR-21-155 affects users of FortiOS, FortiProxy, FortiSwitch, FortiRecorder, and FortiVoice products.

What type of vulnerability is FG-IR-21-155?

FG-IR-21-155 is an integer overflow or wraparound vulnerability identified by CWE-190.

Can FG-IR-21-155 be exploited remotely?

Yes, FG-IR-21-155 can be exploited by an unauthenticated and network adjacent attacker.

Vulnerability/
FG-IR-21-155

medium

4.2

CWE

190

5/7/2022

25/10/2024

FG-IR-21-155: Integer overflow in dhcpd daemon

First published: Tue Jul 05 2022(Updated: )

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

Affected Software	Affected Version	How to fix
Fortinet FortiOS IPS Engine
Fortinet FortiProxy
Fortinet FortiSwitch
Fortinet FortiRecorder 400D
Fortinet FortiVoice Enterprise

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Reference Links

Frequently Asked Questions

What is the severity of FG-IR-21-155?
The severity of FG-IR-21-155 is classified as critical due to its potential for denial of service.
How do I fix FG-IR-21-155?
To fix FG-IR-21-155, update your affected Fortinet devices to the latest firmware version provided by Fortinet.
Who is affected by FG-IR-21-155?
FG-IR-21-155 affects users of FortiOS, FortiProxy, FortiSwitch, FortiRecorder, and FortiVoice products.
What type of vulnerability is FG-IR-21-155?
FG-IR-21-155 is an integer overflow or wraparound vulnerability identified by CWE-190.
Can FG-IR-21-155 be exploited remotely?
Yes, FG-IR-21-155 can be exploited by an unauthenticated and network adjacent attacker.

collector/fortiguard-psirt-latest
source/FortiGuard
alias/CVE-2021-42755
agent/last-modified-date
agent/type
collector/fortiguard-psirt
agent/weakness
agent/references
agent/severity
agent/title
agent/first-publish-date
agent/description
agent/event
agent/trending
agent/source
agent/softwarecombine
agent/tags
agent/guess-ai
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/fortinet
canonical/fortinet fortios ips engine
canonical/fortinet fortiproxy
canonical/fortinet fortiswitch
canonical/fortinet fortirecorder 400d
canonical/fortinet fortivoice enterprise

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Frequently Asked Questions

What is the severity of FG-IR-21-155?
The severity of FG-IR-21-155 is classified as critical due to its potential for denial of service.
How do I fix FG-IR-21-155?
To fix FG-IR-21-155, update your affected Fortinet devices to the latest firmware version provided by Fortinet.
Who is affected by FG-IR-21-155?
FG-IR-21-155 affects users of FortiOS, FortiProxy, FortiSwitch, FortiRecorder, and FortiVoice products.
What type of vulnerability is FG-IR-21-155?
FG-IR-21-155 is an integer overflow or wraparound vulnerability identified by CWE-190.
Can FG-IR-21-155 be exploited remotely?
Yes, FG-IR-21-155 can be exploited by an unauthenticated and network adjacent attacker.