Buffer overflow in Micropython
CVE-2024-8948
A vulnerability was found in MicroPython 1.23.0. It has been rated as critical. Affected by this issue is the function mpz_as_bytes of the file py/objint.c. The manipulation leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The patch is identified as 908ab1ceca15ee6fd0ef82ca4cba770a3ec41894. It is recommended to apply a patch to fix this issue. In micropython objint component, converting zero from int to bytes leads to heap buffer-overflow-write at mpz_as_bytes.
Vulnerability class: Buffer Overflow
EPSS: 0.010 (58.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Micropython — versions 1.23.0
- N/a Micropython — versions 1.23.0
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required)
- cna@vuldb.com (Third Party Advisory, third-party-advisory)
- cna@vuldb.com (issue-tracking, Exploit, Third Party Advisory, exploit, Issue Tracking)
- cna@vuldb.com (Patch, patch)
Frequently asked questions
- What is CVE-2024-8948?
- CVE-2024-8948 is a high-severity vulnerability in Micropython, classified under Heap-based Buffer Overflow. CVSS score: 7.3/10. Published 2024-09-17.
- How severe is CVE-2024-8948?
- High severity. CVSS v3 base score is 7.3 out of 10.