Mitsubishi Electric MELSEC iQ-F series FX5U(C)…: Inadequate Encryption Strength
CVE-2022-25156 is a high-severity inadequate encryption strength vulnerability in Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU; Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU; Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU; Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU; Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4); Mitsubishi Electric MELSEC iQ-R series RJ71EN71; Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2; Mitsubishi Electric MELSEC Q series Q03UDECPU; Mitsubishi Electric MELSEC Q series Q04/06/10/13/20/26/50/100UDEHCPU; Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU; Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU; Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4); Mitsubishi Electric MELSEC Q series QJ71E71-100; Mitsubishi Electric MELSEC Q series QJ72BR15; Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE); Mitsubishi Electric MELSEC L series L02/06/26CPU(-P); Mitsubishi Electric MELSEC L series L26CPU-(P)BT; Mitsubishi Electric MELSEC L series LJ71C24(-R2); Mitsubishi Electric MELSEC L series LJ71E71-100; Mitsubishi Electric MELSEC L series LJ72GF15-T2 from Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU; Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU; Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU; Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU; Mitsubishi Electric MELSEC iQ-R series R16/32/64MTCPU; Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4); Mitsubishi Electric MELSEC iQ-R series RJ71EN71; Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2; Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU; Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU; Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4); Mitsubishi Electric MELSEC Q series QJ71E71-100, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU; Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU; Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU; Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU; Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4); Mitsubishi Electric MELSEC iQ-R series RJ71EN71; Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2; Mitsubishi Electric MELSEC Q series Q03UDECPU; Mitsubishi Electric MELSEC Q series Q04/06/10/13/20/26/50/100UDEHCPU; Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU; Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU; Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4); Mitsubishi Electric MELSEC Q series QJ71E71-100; Mitsubishi Electric MELSEC Q series QJ72BR15; Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE); Mitsubishi Electric MELSEC L series L02/06/26CPU(-P); Mitsubishi Electric MELSEC L series L26CPU-(P)BT; Mitsubishi Electric MELSEC L series LJ71C24(-R2); Mitsubishi Electric MELSEC L series LJ71E71-100; Mitsubishi Electric MELSEC L series LJ72GF15-T2 versions: Mitsubishi Electric MELSEC iQ-R series RJ71EN71 all versions; Mitsubishi Electric MELSEC Q series Q03UDECPU all versions; Mitsubishi Electric MELSEC Q series QJ71E71-100 all versions, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.26% chance of exploitation within 30 days, higher than 70% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU; Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU; Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU; Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU; Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4); Mitsubishi Electric MELSEC iQ-R series RJ71EN71; Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2; Mitsubishi Electric MELSEC Q series Q03UDECPU; Mitsubishi Electric MELSEC Q series Q04/06/10/13/20/26/50/100UDEHCPU; Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU; Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU; Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4); Mitsubishi Electric MELSEC Q series QJ71E71-100; Mitsubishi Electric MELSEC Q series QJ72BR15; Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE); Mitsubishi Electric MELSEC L series L02/06/26CPU(-P); Mitsubishi Electric MELSEC L series L26CPU-(P)BT; Mitsubishi Electric MELSEC L series LJ71C24(-R2); Mitsubishi Electric MELSEC L series LJ71E71-100; Mitsubishi Electric MELSEC L series LJ72GF15-T2 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on mitsubishielectric.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.1 | High | NVD |
| CVSS 2.0 | 6.8 | Medium | NVD |
Official description
Use of Weak Hash vulnerability in Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU all versions, Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU all versions, Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU all versions, Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU all versions, Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU all versions, Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU all versions, Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU all versions, Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4) all versions, Mitsubishi Electric MELSEC iQ-R series RJ71EN71 all versions, Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2 all versions, Mitsubishi Electric MELSEC Q series Q03UDECPU all versions, Mitsubishi Electric MELSEC Q series Q04/06/10/13/20/26/50/100UDEHCPU all versions, Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU all versions, Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU all versions, Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4) all versions, Mitsubishi Electric MELSEC Q series QJ71E71-100 all versions, Mitsubishi Electric MELSEC Q series QJ72BR15 all versions, Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE) all versions, Mitsubishi Electric MELSEC L series L02/06/26CPU(-P) all versions, Mitsubishi Electric MELSEC L series L26CPU-(P)BT all versions, Mitsubishi Electric MELSEC L series LJ71C24(-R2) all versions, Mitsubishi Electric MELSEC L series LJ71E71-100 all versions and Mitsubishi Electric MELSEC L series LJ72GF15-T2 all versions allows a remote unauthenticated attacker to login to the product by using a password reversed from a previously eavesdropped password hash.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Inadequate Encryption Strength
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.
How developers prevent this class of flaw
- Use an encryption scheme that is currently considered to be strong by experts in the field.
More Inadequate Encryption Strength vulnerabilities (CWE-326)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- jvn.jp/vu/JVNVU96577897/index.htmlThird Party Advisory
- cisa.gov/uscert/ics/advisories/icsa-22-090-04Third Party Advisory, US Government Resource
Other vulnerabilities in Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU; Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU; Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU; Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU; Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4); Mitsubishi Electric MELSEC iQ-R series RJ71EN71; Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2; Mitsubishi Electric MELSEC Q series Q03UDECPU; Mitsubishi Electric MELSEC Q series Q04/06/10/13/20/26/50/100UDEHCPU; Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU; Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU; Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4); Mitsubishi Electric MELSEC Q series QJ71E71-100; Mitsubishi Electric MELSEC Q series QJ72BR15; Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE); Mitsubishi Electric MELSEC L series L02/06/26CPU(-P); Mitsubishi Electric MELSEC L series L26CPU-(P)BT; Mitsubishi Electric MELSEC L series LJ71C24(-R2); Mitsubishi Electric MELSEC L series LJ71E71-100; Mitsubishi Electric MELSEC L series LJ72GF15-T2
- 8.1 High severity
- 9.1 Critical severity
- 9.1 Critical severity
- 8.1 High severity
Recent Inadequate Encryption Strength vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
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