CVE-2020-16273 Memory corruption in n/a
Attackers can manipulate the Secure World stack pointer via underflow in Armv8-M TrustZone, potentially enabling privilege escalation or code execution.
- 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-2020-16273?
CVE-2020-16273 is a high-severity memory corruption vulnerability in n/a, published on 12 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Arm software implementing the Armv8-M processors (all versions), the stack selection mechanism could be influenced by a stack-underflow attack in v8-M TrustZone based processors. An attacker can cause a change to the stack pointer used by the Secure World from a non-secure application if the stack is not initialized. This vulnerability affects only the software that is based on Armv8-M processors with the Security Extension.
Weakness: CWE-191
Which versions are affected by CVE-2020-16273?
It affects 1 product.
Products include Arm Armv8-M Firmware.
How do I fix CVE-2020-16273?
No fix has been published for CVE-2020-16273 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-16273 being exploited?
There is no known exploitation of CVE-2020-16273 in the wild and no public exploit code.
Sources
Also known as GHSA-4j52-x36j-w2jw.