PT-2021-6785 · Mitsubishi · Melsec Q Series Qj72Br15+20

Anton Dorfman + 3 · Published 2021-12-15 · Updated 2023-08-08 · CVE-2022-25156

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions 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 Mitsubishi Electric MELSEC L series LJ72GF15-T2 all versions

Description The issue is related to the use of a weak hash in the password storage mechanism, allowing a remote unauthenticated attacker to login to the product by using a password reversed from a previously eavesdropped password hash. This could potentially lead to unauthorized access to protected information.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Inadequate Encryption Strength

Weakness Enumeration

CWE-328

CWE-326

Related Identifiers

BDU:2022-02194

CVE-2022-25156

Affected Products

Melsec L Series L02/06/26Cpu

Melsec L Series L26Cpu-(P)Bt

Melsec L Series Lj71C24

Melsec L Series Lj71E71-100

Melsec L Series Lj72Gf15-T2

Melsec Q Series Q03/04/06/13/26Udvcpu

Melsec Q Series Q03Udecpu

Melsec Q Series Q04/06/10/13/20/26/50/100Udehcpu

Melsec Q Series Q04/06/13/26Udpvcpu

Melsec Q Series Qj71C24N

Melsec Q Series Qj71E71-100

Melsec Q Series Qj72Br15

Melsec Q Series Qj72Lp25

Melsec Iq-F Series Fx5U(C) Cpu

Melsec Iq-F Series Fx5Uj Cpu

Melsec Iq-R Series R00/01/02Cpu

Melsec Iq-R Series R04/08/16/32/120(En)Cpu

Melsec Iq-R Series R08/16/32/120Psfcpu

Melsec Iq-R Series Rj71C24

Melsec Iq-R Series Rj71En71

Melsec Iq-R Series Rj72Gf15-T2

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2022-25156 · Security Note
• https://mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-031_en.pdf · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-02194 · Security Note
• https://jvn.jp/vu/JVNVU96577897/index.html · Note
• https://t.me/cibsecurity/40027 · Telegram Post
• https://cisa.gov/uscert/ics/advisories/icsa-22-090-04 · Note