CVE-2022-26942: motorola mobile radio Untrusted Pointer Dereference

Vulnerability summary

CVE-2022-26942 is a high (CVSS 8.2) Untrusted Pointer Dereference vulnerability in motorola mobile radio. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.3% of scored vulnerabilities.

Timeline

1. 19-10-2023
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

The Motorola MTM5000 series firmwares lack pointer validation on arguments passed to trusted execution environment (TEE) modules. Two modules are used, one responsible for KVL key management and the other for TETRA cryptographic functionality. In both modules, an adversary with non-secure supervisor level code execution can exploit the issue in order to gain secure supervisor code execution within the TEE. This constitutes a full break of the TEE module, exposing the device key as well as any TETRA cryptographic keys and the confidential TETRA cryptographic primitives.

• CWE-822Untrusted Pointer DereferenceThe product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
• CWE-763Release of Invalid Pointer or ReferenceThe product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.