Vulnerability CVE-2020-5668


Published: 2020-11-20

Description:
Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU all versions, R08/16/32/120PSFCPU all versions, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, RJ71C24 (-R2/R4) all versions, and RJ71GN11-T2 all versions) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the module by a specially crafted SLMP packet

 References:
https://jvn.jp/vu/JVNVU95980140/index.html
https://us-cert.cisa.gov/ics/advisories/icsa-20-324-05
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-016.pdf
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-016_en.pdf

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