CVE-2021-36133 Privilege escalation in n/a
Attackers can bypass TrustZone security to read and write Secure World memory via a DMA peripheral due to missing access controls in the OPTEE-OS CSU driver.
- 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-2021-36133?
CVE-2021-36133 is a high-severity vulnerability in n/a, published on 7 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The OPTEE-OS CSU driver for NXP i.MX SoC devices lacks security access configuration for several models, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a DMA capable peripheral.
Weakness: CWE-732
Which versions are affected by CVE-2021-36133?
It affects 1 product.
Products include Trustedfirmware Op-Tee.
How do I fix CVE-2021-36133?
No fix has been published for CVE-2021-36133 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-36133 being exploited?
There is no known exploitation of CVE-2021-36133 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-36133, UBUNTU-CVE-2021-36133.