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.

• CWE-122
• CWE-787

• https://github.com/micropython/micropython/commit/908ab1ceca15ee6fd0ef82ca4cba770a3ec41894Patch
• https://github.com/micropython/micropython/issues/13041Exploit, Issue Tracking, Third Party Advisory
• https://vuldb.com/?ctiid.277766Permissions Required
• https://vuldb.com/?id.277766Third Party Advisory
• https://vuldb.com/?submit.409317Third Party Advisory

Published

Sep 17, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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