CVE-2022-29951
This protocol does not have any authentication features, allowing any attacker capable of communicating with the port in question to invoke (a subset of) desired functionality.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
JTEKT TOYOPUC PLCs through 2022-04-29 mishandle authentication. They utilize the CMPLink/TCP protocol (configurable on ports 1024-65534 on either TCP or UDP) for a wide variety of engineering purposes such as starting and stopping the PLC, downloading and uploading projects, and changing configuration settings. This protocol does not have any authentication features, allowing any attacker capable of communicating with the port in question to invoke (a subset of) desired functionality.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 1.21% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- jtekt/pc10g-cpu tcc-6353 firmware · jtekt/pc10ge tcc-6464 firmware · jtekt/pc10p tcc-6372 firmware · jtekt/pc10p-dp tcc-6726 firmware · jtekt/pc10p-dp-io tcc-6752 firmware · jtekt/pc10b-p tcc-6373 firmware · jtekt/pc10b tcc-1021 firmware · jtekt/pc10e tcc-4737 firmware · jtekt/pc10el tcc-4747 firmware · jtekt/plus cpu tcc-6740 firmware · jtekt/pc3jx tcc-6901 firmware · jtekt/pc3jx-d tcc-6902 firmware · jtekt/pc10pe tcc-1101 firmware · jtekt/pc10pe-1616p tcc-1102 firmware · jtekt/pcdl tkc-6688 firmware · jtekt/nano 10gx tuc-1157 firmware · jtekt/nano cpu tuc-6941 firmware
- Source
- cve@mitre.org
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-172-02Mitigation, Third Party Advisory, US Government Resource
- https://www.forescout.com/blog/Third Party Advisory
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-172-02Mitigation, Third Party Advisory, US Government Resource
- https://www.forescout.com/blog/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.