CVE-2023-4257 Unchecked user input length in the Zephyr WiFi shell module
Attackers can trigger buffer overflows in the Zephyr WiFi shell module via unchecked input length, potentially leading to code execution or crashes.
- 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-2023-4257?
CVE-2023-4257 is a high-severity memory corruption vulnerability in Zephyrproject Zephyr, published on 13 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Unchecked user input length in /subsys/net/l2/wifi/wifi_shell.c can cause buffer overflows.
Which versions are affected by CVE-2023-4257?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2023-4257?
No fix has been published for CVE-2023-4257 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-2023-4257 being exploited?
There is no known exploitation of CVE-2023-4257 in the wild and no public exploit code.
Other vulnerabilities in Zephyrproject Zephyr
- CVE-2026-5067 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
- CVE-2022-3806 Bluetooth HCI Error Handling Double Free
- CVE-2017-14199 Memory corruption in getaddrinfo
- CVE-2018-1000800 Null dereference in n/a
- CVE-2021-3329 DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
Sources
Also known as GHSA-853q-q69w-gf5j.