CVE-2024-32018 Ineffective size check due to assert() and buffer overflow in RIOT
Attackers can trigger a buffer overflow in RIOT OS by providing oversized input when assertions are disabled, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-32018?
CVE-2024-32018 is a high-severity memory corruption vulnerability in RIOT-OS RIOT, published on 1 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
RIOT is a real-time multi-threading operating system that supports a range of devices that are typically 8-bit, 16-bit and 32-bit microcontrollers. Most codebases define assertion macros which compile to a no-op on non-debug builds. If assertions are the only line of defense against untrusted input, the software may be exposed to attacks that leverage the lack of proper input checks. In detail, in the `nimble_scanlist_update()` function below, `len` is checked in an assertion and subsequently used in a call to `memcpy()`. If an attacker is able to provide a larger `len` value while assertions are compiled-out, they can write past the end of the fixed-length `e->ad` buffer. If the unchecked input above is attacker-controlled and crosses a security boundary, the impact of the buffer overflow vulnerability could range from denial of service to arbitrary code execution. This issue has not yet been patched. Users are advised to add manual `len` checking.
Weakness: CWE-120
Which versions are affected by CVE-2024-32018?
It affects 1 product.
Products include Riot-Os Riot.
How do I fix CVE-2024-32018?
No fix has been published for CVE-2024-32018 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-2024-32018 being exploited?
There is no known exploitation of CVE-2024-32018 in the wild and no public exploit code.
Other vulnerabilities in RIOT-OS RIOT
Sources
Also known as GHSA-899m-q6pp-hmp3.