CVE-2020-5652
Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02 CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120 SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R 16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q 03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q 172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26 CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication functions of the products via a specially crafted packet, which may lead to a denial of service (DoS) condition .
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.57% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- mitsubishielectric/melsec q-q04udpvcpu firmware · mitsubishielectric/melsec q-q06udpvcpu firmware · mitsubishielectric/melsec q-q13udpvcpu firmware · mitsubishielectric/melsec q-q26udpvcpu firmware · mitsubishielectric/melsec q-q03udvcpu firmware · mitsubishielectric/melsec q-q04udvcpu firmware · mitsubishielectric/melsec q-q13udvcpu firmware · mitsubishielectric/melsec q-q26udvcpu firmware · mitsubishielectric/melsec q-q03udecpu firmware · mitsubishielectric/melsec q-q04udehcpu firmware · mitsubishielectric/melsec q-q06udehcpu firmware · mitsubishielectric/melsec q-q10udehcpu firmware · mitsubishielectric/melsec q-q13udehcpu firmware · mitsubishielectric/melsec q-q20udehcpu firmware · mitsubishielectric/melsec q-q26udehcpu firmware · mitsubishielectric/melsec q-q50udehcpu firmware · mitsubishielectric/melsec q-q100udehcpu firmware · mitsubishielectric/melsec iq-r08sfcpu firmware · mitsubishielectric/melsec iq-r16sfcpu firmware · mitsubishielectric/melsec iq-r32sfcpu firmware · +31 more
- Source
- vultures@jpcert.or.jp
References
- https://jvn.jp/vu/JVNVU96558207/index.htmlThird Party Advisory
- https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-013.pdfVendor Advisory
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-013_en.pdfVendor Advisory
- https://jvn.jp/vu/JVNVU96558207/index.htmlThird Party Advisory
- https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-013.pdfVendor Advisory
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-013_en.pdfVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.