CVE-2021-3625 Buffer overflow in Zephyr USB DFU DNLOAD
A heap-based buffer overflow in Zephyr RTOS USB DFU DNLOAD allows attackers to execute arbitrary code or cause denial of service.
- 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-2021-3625?
CVE-2021-3625 is a critical memory corruption vulnerability in Zephyrproject Zephyr, published on 5 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Buffer overflow in Zephyr USB DFU DNLOAD. Zephyr versions >= v2.5.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363
Which versions are affected by CVE-2021-3625?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2021-3625?
No fix has been published for CVE-2021-3625 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-2021-3625 being exploited?
There is no known exploitation of CVE-2021-3625 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
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