CVE-2023-41094

TouchLink packets processed after timeout or out of range due to Operation on a Resource after Expiration and Missing Release of Resource after Effective Lifetime may allow a device to be added outside of valid TouchLink range or pairing duration

This issue affects Ember ZNet 7.1.x from 7.1.3 through 7.1.5; 7.2.x from 7.2.0 through 7.2.3; Version 7.3 and later are unaffected

Weakness

The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.

Affected Software

Potential Mitigations

• Use a mechanism that can validate the identity of the source, such as a certificate, and validate the integrity of data to ensure that it cannot be modified in transit using an Adversary-in-the-Middle (AITM) attack.
• When designing functionality of actions in the URL scheme, consider whether the action should be accessible to all mobile applications, or if an allowlist of applications to interface with is appropriate.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/500.html
• https://cwe.mitre.org/data/definitions/594.html
• https://cwe.mitre.org/data/definitions/595.html
• https://cwe.mitre.org/data/definitions/596.html

References

• https://community.silabs.com/0688Y00000aIPzL
• https://community.silabs.com/0688Y00000aIPzL