CVE-2020-16630 Auth bypass in n/a
Attackers can bypass Bluetooth authentication checks by spoofing MAC addresses, gaining unauthorized read and write access to protected device attributes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-16630?
CVE-2020-16630 is a medium-severity authentication bypass vulnerability in n/a, published on 20 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
TI’s BLE stack caches and reuses the LTK’s property for a bonded mobile. A LTK can be an unauthenticated-and-no-MITM-protection key created by Just Works or an authenticated-and-MITM-protection key created by Passkey Entry, Numeric Comparison or OOB. Assume that a victim mobile uses secure pairing to pair with a victim BLE device based on TI chips and generate an authenticated-and-MITM-protection LTK. If a fake mobile with the victim mobile’s MAC address uses Just Works and pairs with the victim device, the generated LTK still has the property of authenticated-and-MITM-protection. Therefore, the fake mobile can access attributes with the authenticated read/write permission.
Weakness: CWE-863
Which versions are affected by CVE-2020-16630?
It affects 7 products.
Products include Ti 15.4-Stack, Ti Ble5-Stack, Ti Dynamic Multi-Protocal Manager, Ti Easylink, Ti Openthread, Ti Real-Time Operating System and 1 more.
How do I fix CVE-2020-16630?
No fix has been published for CVE-2020-16630 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-16630 being exploited?
There is no known exploitation of CVE-2020-16630 in the wild and no public exploit code.
Sources
Also known as GHSA-h5cr-94cg-hxmr.