CVE-2022-29958 Code injection in n/a
Attackers can inject arbitrary machine code into JTEKT TOYOPUC PLCs via unauthenticated CMPLink/TCP protocol, gaining full control over the CPU module.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-29958?
CVE-2022-29958 is a critical code injection vulnerability in n/a, published on 26 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-345
Which versions are affected by CVE-2022-29958?
It affects 17 products.
Products include Jtekt Nano 10gx Tuc-1157 Firmware, Jtekt Nano Cpu Tuc-6941 Firmware, Jtekt Pc10b-P Tcc-6373 Firmware, Jtekt Pc10b Tcc-1021 Firmware, Jtekt Pc10e Tcc-4737 Firmware, Jtekt Pc10el Tcc-4747 Firmware and 11 more.
How do I fix CVE-2022-29958?
No fix has been published for CVE-2022-29958 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2022-29958 being exploited?
There is no known exploitation of CVE-2022-29958 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-vq3c-fhqv-p29r.