CVE-2020-10023 Shell Subsystem Contains a Buffer Overflow Vulnerability In shell_spaces_trim
An attacker with physical access can trigger a buffer overflow in the Zephyr kernel shell, causing denial of service or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-10023?
CVE-2020-10023 is a medium-severity memory corruption vulnerability in Zephyrproject Zephyr, published on 11 May 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The shell subsystem contains a buffer overflow, whereby an adversary with physical access to the device is able to cause a memory corruption, resulting in denial of service or possibly code execution within the Zephyr kernel. See NCC-NCC-019 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.
Weakness: CWE-120
Which versions are affected by CVE-2020-10023?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2020-10023?
No fix has been published for CVE-2020-10023 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-2020-10023 being exploited?
There is no known exploitation of CVE-2020-10023 in the wild and no public exploit code.
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Sources
Also known as GHSA-ccj2-xhg7-jrxc.