JTEKT TOYOPUC PLC up to 2022-04-29 CMPLink Protocol integrity check

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

A vulnerability, which was classified as critical, was found in JTEKT TOYOPUC PLC up to 2022-04-29. This affects an unknown part of the component CMPLink Protocol Handler. The manipulation with an unknown input leads to a integrity check vulnerability. CWE is classifying the issue as CWE-353. The product uses a transmission protocol that does not include a mechanism for verifying the integrity of the data during transmission, such as a checksum. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

JTEKT TOYOPUC PLCs through 2022-04-29 do not ensure data integrity. They utilize the unauthenticated CMPLink/TCP protocol for engineering purposes, including downloading projects and control logic to the PLC. Control logic is downloaded to the PLC on a block-by-block basis with a given memory address and a blob of machine code. The logic that is downloaded to the PLC is not cryptographically authenticated, allowing an attacker to execute arbitrary machine code on the PLC's CPU module in the context of the runtime. In the case of the PC10G-CPU, and likely for other CPU modules of the TOYOPUC family, a processor without MPU or MMU is used and this no memory protection or privilege-separation capabilities are available, giving an attacker full control over the CPU.

The weakness was released 07/27/2022 as icsa-22-172-02. It is possible to read the advisory at cisa.gov. This vulnerability is uniquely identified as CVE-2022-29958 since 04/29/2022. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Integrity check
CWE: CWE-353
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/29/2022 🔍
07/27/2022 +89 days 🔍
07/27/2022 +0 days 🔍
08/27/2022 +31 days 🔍

Sourcesinfo

Advisory: icsa-22-172-02
Status: Not defined

CVE: CVE-2022-29958 (🔍)

Entryinfo

Created: 07/27/2022 14:22
Updated: 08/27/2022 15:13
Changes: 07/27/2022 14:22 (39), 08/27/2022 15:13 (11)
Complete: 🔍

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