CVE-2022-33324: Denial-of-Service Vulnerability in Ethernet port of MELSEC iQ-R, iQ-L Series and MELIPC Series
Improper Resource Shutdown or Release vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series R00/01/02CPU Firmware versions "32" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "65" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R08/16/32/120SFCPU Firmware versions "29" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R08/16/32/120PSFCPU Firmware versions "08" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R12CCPU-V Firmware versions "17" and prior, Mitsubishi Electric Corporation MELSEC iQ-L Series L04/08/16/32HCPU Firmware versions "05" and prior and Mitsubishi Electric Corporation MELIPC Series MI5122-VW Firmware versions "07" and prior allows a remote unauthenticated attacker to cause a Denial of Service condition in Ethernet communication on the module by sending specially crafted packets. A system reset of the module is required for recovery.
Other sources
Improper Resource Shutdown or Release vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series R00/01/02CPU Firmware versions "32" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "65" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R08/16/32/120SFCPU Firmware versions "29" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R12CCPU-V all versions, Mitsubishi Electric Corporation MELSEC iQ-L Series L04/08/16/32HCPU all versions and Mitsubishi Electric Corporation MELIPC Series MI5122-VW all versions allows a remote unauthenticated attacker to cause a Denial of Service condition in Ethernet communication on the module by sending specially crafted packets. A system reset of the module is required for recovery.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2022-33324.
What is the severity of CVE-2022-33324?
The severity of CVE-2022-33324 is high with a severity value of 7.5.
Which software versions are affected by CVE-2022-33324?
Mitsubishi Electric Corporation MELSEC iQ-R Series R00/01/02CPU Firmware versions "32" and prior, Mitsubishi Electric Corporation MELSEC iQ-R Series R04/08/16/32/120(EN)CPU Firmware versions "65" and prior are affected by CVE-2022-33324.
How can I fix CVE-2022-33324?
To fix CVE-2022-33324, it is recommended to update the affected software versions to a version higher than "33.0" for R00/01/02CPU Firmware and higher than "66.0" for R04/08/16/32/120(EN)CPU Firmware.
Where can I find more information about CVE-2022-33324?
You can find more information about CVE-2022-33324 at the following references: [CVE-2022-33324](https://jvn.jp/vu/JVNVU96883262), [CISA Advisory](https://www.cisa.gov/uscert/ics/advisories/icsa-22-356-03), [Mitsubishi Electric PSIRT](https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-018_en.pdf).