GHSA-vh3x-525m-jp4r
heap-buffer-overflow in MicroPython
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| PyPI | micropython-copy | <= 3.3.3.post3 | no fix listed |
| PyPI | micropython-io | <= 0.1 | no fix listed |
| PyPI | micropython-os | <= 0.8 | no fix listed |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2024-8948
- https://github.com/micropython/micropython/issues/13041
- https://github.com/micropython/micropython/commit/908ab1ceca15ee6fd0ef82ca4cba770a3ec41894
- https://github.com/pypa/advisory-database/tree/main/vulns/micropython-copy/PYSEC-2024-87.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/micropython-io/PYSEC-2024-88.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/micropython-os/PYSEC-2024-89.yaml
- https://vuldb.com/?ctiid.277766
- https://vuldb.com/?id.277766
- https://vuldb.com/?submit.409317