CVE-2021-40154 Information disclosure in n/a
An attacker with physical access can read protected flash memory via a crafted USB request during ISP mode on NXP LPC55S69 devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40154?
CVE-2021-40154 is a medium-severity vulnerability in n/a, published on 1 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.
Weakness: CWE-125
Which versions are affected by CVE-2021-40154?
It affects 3 products.
Products include Nxp Lpc55s69jbd100 Firmware, Nxp Lpc55s69jbd64 Firmware, Nxp Lpc55s69jev98 Firmware.
How do I fix CVE-2021-40154?
No fix has been published for CVE-2021-40154 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-40154 being exploited?
There is no known exploitation of CVE-2021-40154 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-f88h-2xxc-h4r4.