CVE-2021-42755: Integer overflow in dhcpd daemon
First published: Tue Jul 05 2022(Updated: )
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.
Credit: psirt@fortinet.com psirt@fortinet.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fortinet FortiProxy | >=1.0.0<=1.0.7 | |
| Fortinet FortiProxy | >=1.1.0<=1.1.6 | |
| Fortinet FortiProxy | >=1.2.0<=1.2.13 | |
| Fortinet FortiProxy | >=2.0.0<=2.0.6 | |
| Fortinet FortiProxy | =7.0.0 | |
| Fortinet FortiVoice | =5.3.0 | |
| Fortinet FortiVoice | =5.3.1 | |
| Fortinet FortiVoice | =5.3.2 | |
| Fortinet FortiVoice | =5.3.3 | |
| Fortinet FortiVoice | =5.3.4 | |
| Fortinet FortiVoice | =5.3.5 | |
| Fortinet FortiVoice | =5.3.6 | |
| Fortinet FortiVoice | =5.3.7 | |
| Fortinet FortiVoice | =5.3.8 | |
| Fortinet FortiVoice | =5.3.10 | |
| Fortinet FortiVoice | =5.3.11 | |
| Fortinet FortiVoice | =5.3.12 | |
| Fortinet FortiVoice | =5.3.13 | |
| Fortinet FortiVoice | =5.3.14 | |
| Fortinet FortiVoice | =5.3.15 | |
| Fortinet FortiVoice | =5.3.16 | |
| Fortinet FortiVoice | =5.3.17 | |
| Fortinet FortiVoice | =5.3.18 | |
| Fortinet FortiVoice | =5.3.19 | |
| Fortinet FortiVoice | =5.3.20 | |
| Fortinet FortiVoice | =5.3.21 | |
| Fortinet FortiVoice | =5.3.22 | |
| Fortinet FortiVoice | =5.3.23 | |
| Fortinet FortiVoice | =5.3.24 | |
| Fortinet FortiVoice | =5.3.25 | |
| Fortinet FortiVoice | =5.3.26 | |
| Fortinet FortiVoice | =6.0.0 | |
| Fortinet FortiVoice | =6.0.1 | |
| Fortinet FortiVoice | =6.0.2 | |
| Fortinet FortiVoice | =6.0.3 | |
| Fortinet FortiVoice | =6.0.4 | |
| Fortinet FortiVoice | =6.0.5 | |
| Fortinet FortiVoice | =6.0.6 | |
| Fortinet FortiVoice | =6.0.7 | |
| Fortinet FortiVoice | =6.0.8 | |
| Fortinet FortiVoice | =6.0.9 | |
| Fortinet FortiVoice | =6.0.10 | |
| Fortinet FortiVoice | =6.4.0 | |
| Fortinet FortiVoice | =6.4.1 | |
| Fortinet FortiVoice | =6.4.2 | |
| Fortinet FortiVoice | =6.4.3 | |
| Fortinet FortiOS | =5.4.0 | |
| Fortinet FortiOS | =5.4.1 | |
| Fortinet FortiOS | =5.4.2 | |
| Fortinet FortiOS | =5.4.3 | |
| Fortinet FortiOS | =5.4.4 | |
| Fortinet FortiOS | =5.4.5 | |
| Fortinet FortiOS | =5.4.6 | |
| Fortinet FortiOS | =5.4.7 | |
| Fortinet FortiOS | =5.4.8 | |
| Fortinet FortiOS | =5.4.9 | |
| Fortinet FortiOS | =5.4.10 | |
| Fortinet FortiOS | =5.4.11 | |
| Fortinet FortiOS | =5.4.12 | |
| Fortinet FortiOS | =5.4.13 | |
| Fortinet FortiOS | =5.6.0 | |
| Fortinet FortiOS | =5.6.1 | |
| Fortinet FortiOS | =5.6.2 | |
| Fortinet FortiOS | =5.6.3 | |
| Fortinet FortiOS | =5.6.4 | |
| Fortinet FortiOS | =5.6.5 | |
| Fortinet FortiOS | =5.6.6 | |
| Fortinet FortiOS | =5.6.7 | |
| Fortinet FortiOS | =5.6.8 | |
| Fortinet FortiOS | =5.6.9 | |
| Fortinet FortiOS | =5.6.10 | |
| Fortinet FortiOS | =5.6.11 | |
| Fortinet FortiOS | =5.6.12 | |
| Fortinet FortiOS | =5.6.13 | |
| Fortinet FortiOS | =5.6.14 | |
| Fortinet FortiOS | =6.0.0 | |
| Fortinet FortiOS | =6.0.1 | |
| Fortinet FortiOS | =6.0.2 | |
| Fortinet FortiOS | =6.0.3 | |
| Fortinet FortiOS | =6.0.4 | |
| Fortinet FortiOS | =6.0.5 | |
| Fortinet FortiOS | =6.0.6 | |
| Fortinet FortiOS | =6.0.7 | |
| Fortinet FortiOS | =6.0.8 | |
| Fortinet FortiOS | =6.0.9 | |
| Fortinet FortiOS | =6.0.10 | |
| Fortinet FortiOS | =6.0.11 | |
| Fortinet FortiOS | =6.0.12 | |
| Fortinet FortiOS | =6.0.13 | |
| Fortinet FortiOS | =6.0.14 | |
| Fortinet FortiOS | =6.2.0 | |
| Fortinet FortiOS | =6.2.1 | |
| Fortinet FortiOS | =6.2.2 | |
| Fortinet FortiOS | =6.2.3 | |
| Fortinet FortiOS | =6.2.4 | |
| Fortinet FortiOS | =6.2.5 | |
| Fortinet FortiOS | =6.2.6 | |
| Fortinet FortiOS | =6.2.7 | |
| Fortinet FortiOS | =6.2.8 | |
| Fortinet FortiOS | =6.2.9 | |
| Fortinet FortiOS | =6.2.10 | |
| Fortinet FortiOS | =6.4.0 | |
| Fortinet FortiOS | =6.4.1 | |
| Fortinet FortiOS | =6.4.2 | |
| Fortinet FortiOS | =6.4.3 | |
| Fortinet FortiOS | =6.4.4 | |
| Fortinet FortiOS | =6.4.5 | |
| Fortinet FortiOS | =6.4.6 | |
| Fortinet FortiOS | =6.4.7 | |
| Fortinet FortiOS | =7.0.0 | |
| Fortinet FortiOS | =7.0.1 | |
| Fortinet FortiOS | =7.0.2 | |
| Fortinet Fortirecorder Firmware | =6.0.0 | |
| Fortinet Fortirecorder Firmware | =6.0.1 | |
| Fortinet Fortirecorder Firmware | =6.0.2 | |
| Fortinet Fortirecorder Firmware | =6.0.3 | |
| Fortinet Fortirecorder Firmware | =6.0.4 | |
| Fortinet Fortirecorder Firmware | =6.0.5 | |
| Fortinet Fortirecorder Firmware | =6.0.6 | |
| Fortinet Fortirecorder Firmware | =6.0.7 | |
| Fortinet Fortirecorder Firmware | =6.0.8 | |
| Fortinet Fortirecorder Firmware | =6.0.9 | |
| Fortinet Fortirecorder Firmware | =6.0.10 | |
| Fortinet Fortirecorder Firmware | =6.4.0 | |
| Fortinet Fortirecorder Firmware | =6.4.1 | |
| Fortinet Fortirecorder Firmware | =6.4.2 | |
| Fortinet FortiSwitch | >=6.0.0<=6.0.7 | |
| Fortinet FortiSwitch | >=6.2.0<=6.2.7 | |
| Fortinet FortiSwitch | >=6.4.0<=6.4.9 | |
| Fortinet FortiSwitch | >=7.0.0<=7.0.2 | |
| Fortinet FortiVoice | =5.3.0 | |
| Fortinet FortiVoice | =5.3.1 | |
| Fortinet FortiVoice | =5.3.2 | |
| Fortinet FortiVoice | =5.3.3 | |
| Fortinet FortiVoice | =5.3.4 | |
| Fortinet FortiVoice | =5.3.5 | |
| Fortinet FortiVoice | =5.3.6 | |
| Fortinet FortiVoice | =5.3.7 | |
| Fortinet FortiVoice | =5.3.8 | |
| Fortinet FortiVoice | =5.3.10 | |
| Fortinet FortiVoice | =5.3.11 | |
| Fortinet FortiVoice | =5.3.12 | |
| Fortinet FortiVoice | =5.3.13 | |
| Fortinet FortiVoice | =5.3.14 | |
| Fortinet FortiVoice | =5.3.15 | |
| Fortinet FortiVoice | =5.3.16 | |
| Fortinet FortiVoice | =5.3.17 | |
| Fortinet FortiVoice | =5.3.18 | |
| Fortinet FortiVoice | =5.3.19 | |
| Fortinet FortiVoice | =5.3.20 | |
| Fortinet FortiVoice | =5.3.21 | |
| Fortinet FortiVoice | =5.3.22 | |
| Fortinet FortiVoice | =5.3.23 | |
| Fortinet FortiVoice | =5.3.24 | |
| Fortinet FortiVoice | =5.3.25 | |
| Fortinet FortiVoice | =5.3.26 | |
| Fortinet FortiVoice | =6.0.0 | |
| Fortinet FortiVoice | =6.0.1 | |
| Fortinet FortiVoice | =6.0.2 | |
| Fortinet FortiVoice | =6.0.3 | |
| Fortinet FortiVoice | =6.0.4 | |
| Fortinet FortiVoice | =6.0.5 | |
| Fortinet FortiVoice | =6.0.6 | |
| Fortinet FortiVoice | =6.0.7 | |
| Fortinet FortiVoice | =6.0.8 | |
| Fortinet FortiVoice | =6.0.9 | |
| Fortinet FortiVoice | =6.0.10 | |
| Fortinet FortiVoice | =6.4.0 | |
| Fortinet FortiVoice | =6.4.1 | |
| Fortinet FortiVoice | =6.4.2 | |
| Fortinet FortiVoice | =6.4.3 |
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Reference Links
- agent/type
- agent/remedy
- agent/weakness
- agent/author
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/fortiguard-psirt-latest
- source/FortiGuard
- alias/CVE-2021-42755
- collector/fortiguard-psirt
- agent/references
- agent/severity
- agent/title
- agent/first-publish-date
- agent/tags
- agent/description
- agent/event
- vendor/fortinet
- canonical/fortinet fortiproxy
- version/fortinet fortiproxy/1.0.0
- version/fortinet fortiproxy/1.0.7
- version/fortinet fortiproxy/1.1.0
- version/fortinet fortiproxy/1.1.6
- version/fortinet fortiproxy/1.2.0
- version/fortinet fortiproxy/1.2.13
- version/fortinet fortiproxy/2.0.0
- version/fortinet fortiproxy/2.0.6
- version/fortinet fortiproxy/7.0.0
- canonical/fortinet fortivoice
- version/fortinet fortivoice/5.3.0
- version/fortinet fortivoice/5.3.1
- version/fortinet fortivoice/5.3.2
- version/fortinet fortivoice/5.3.3
- version/fortinet fortivoice/5.3.4
- version/fortinet fortivoice/5.3.5
- version/fortinet fortivoice/5.3.6
- version/fortinet fortivoice/5.3.7
- version/fortinet fortivoice/5.3.8
- version/fortinet fortivoice/5.3.10
- version/fortinet fortivoice/5.3.11
- version/fortinet fortivoice/5.3.12
- version/fortinet fortivoice/5.3.13
- version/fortinet fortivoice/5.3.14
- version/fortinet fortivoice/5.3.15
- version/fortinet fortivoice/5.3.16
- version/fortinet fortivoice/5.3.17
- version/fortinet fortivoice/5.3.18
- version/fortinet fortivoice/5.3.19
- version/fortinet fortivoice/5.3.20
- version/fortinet fortivoice/5.3.21
- version/fortinet fortivoice/5.3.22
- version/fortinet fortivoice/5.3.23
- version/fortinet fortivoice/5.3.24
- version/fortinet fortivoice/5.3.25
- version/fortinet fortivoice/5.3.26
- version/fortinet fortivoice/6.0.0
- version/fortinet fortivoice/6.0.1
- version/fortinet fortivoice/6.0.2
- version/fortinet fortivoice/6.0.3
- version/fortinet fortivoice/6.0.4
- version/fortinet fortivoice/6.0.5
- version/fortinet fortivoice/6.0.6
- version/fortinet fortivoice/6.0.7
- version/fortinet fortivoice/6.0.8
- version/fortinet fortivoice/6.0.9
- version/fortinet fortivoice/6.0.10
- version/fortinet fortivoice/6.4.0
- version/fortinet fortivoice/6.4.1
- version/fortinet fortivoice/6.4.2
- version/fortinet fortivoice/6.4.3
- canonical/fortinet fortios
- version/fortinet fortios/5.4.0
- version/fortinet fortios/5.4.1
- version/fortinet fortios/5.4.2
- version/fortinet fortios/5.4.3
- version/fortinet fortios/5.4.4
- version/fortinet fortios/5.4.5
- version/fortinet fortios/5.4.6
- version/fortinet fortios/5.4.7
- version/fortinet fortios/5.4.8
- version/fortinet fortios/5.4.9
- version/fortinet fortios/5.4.10
- version/fortinet fortios/5.4.11
- version/fortinet fortios/5.4.12
- version/fortinet fortios/5.4.13
- version/fortinet fortios/5.6.0
- version/fortinet fortios/5.6.1
- version/fortinet fortios/5.6.2
- version/fortinet fortios/5.6.3
- version/fortinet fortios/5.6.4
- version/fortinet fortios/5.6.5
- version/fortinet fortios/5.6.6
- version/fortinet fortios/5.6.7
- version/fortinet fortios/5.6.8
- version/fortinet fortios/5.6.9
- version/fortinet fortios/5.6.10
- version/fortinet fortios/5.6.11
- version/fortinet fortios/5.6.12
- version/fortinet fortios/5.6.13
- version/fortinet fortios/5.6.14
- version/fortinet fortios/6.0.0
- version/fortinet fortios/6.0.1
- version/fortinet fortios/6.0.2
- version/fortinet fortios/6.0.3
- version/fortinet fortios/6.0.4
- version/fortinet fortios/6.0.5
- version/fortinet fortios/6.0.6
- version/fortinet fortios/6.0.7
- version/fortinet fortios/6.0.8
- version/fortinet fortios/6.0.9
- version/fortinet fortios/6.0.10
- version/fortinet fortios/6.0.11
- version/fortinet fortios/6.0.12
- version/fortinet fortios/6.0.13
- version/fortinet fortios/6.0.14
- version/fortinet fortios/6.2.0
- version/fortinet fortios/6.2.1
- version/fortinet fortios/6.2.2
- version/fortinet fortios/6.2.3
- version/fortinet fortios/6.2.4
- version/fortinet fortios/6.2.5
- version/fortinet fortios/6.2.6
- version/fortinet fortios/6.2.7
- version/fortinet fortios/6.2.8
- version/fortinet fortios/6.2.9
- version/fortinet fortios/6.2.10
- version/fortinet fortios/6.4.0
- version/fortinet fortios/6.4.1
- version/fortinet fortios/6.4.2
- version/fortinet fortios/6.4.3
- version/fortinet fortios/6.4.4
- version/fortinet fortios/6.4.5
- version/fortinet fortios/6.4.6
- version/fortinet fortios/6.4.7
- version/fortinet fortios/7.0.0
- version/fortinet fortios/7.0.1
- version/fortinet fortios/7.0.2
- canonical/fortinet fortirecorder firmware
- version/fortinet fortirecorder firmware/6.0.0
- version/fortinet fortirecorder firmware/6.0.1
- version/fortinet fortirecorder firmware/6.0.2
- version/fortinet fortirecorder firmware/6.0.3
- version/fortinet fortirecorder firmware/6.0.4
- version/fortinet fortirecorder firmware/6.0.5
- version/fortinet fortirecorder firmware/6.0.6
- version/fortinet fortirecorder firmware/6.0.7
- version/fortinet fortirecorder firmware/6.0.8
- version/fortinet fortirecorder firmware/6.0.9
- version/fortinet fortirecorder firmware/6.0.10
- version/fortinet fortirecorder firmware/6.4.0
- version/fortinet fortirecorder firmware/6.4.1
- version/fortinet fortirecorder firmware/6.4.2
- canonical/fortinet fortiswitch
- version/fortinet fortiswitch/6.0.0
- version/fortinet fortiswitch/6.0.7
- version/fortinet fortiswitch/6.2.0
- version/fortinet fortiswitch/6.2.7
- version/fortinet fortiswitch/6.4.0
- version/fortinet fortiswitch/6.4.9
- version/fortinet fortiswitch/7.0.0
- version/fortinet fortiswitch/7.0.2