CVE-2018-12247

HIGH

mruby 1.4.1 - Use After Free

Title source: llm
STIX 2.1

Description

An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class, related to certain .clone usage, because mrb_obj_clone in kernel.c copies flags other than the MRB_FLAG_IS_FROZEN flag (e.g., the embedded flag).

References (2)

Core 2
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/mruby/mruby/issues/4036

Scores

CVSS v3 7.5
EPSS 0.0027
EPSS Percentile 51.0%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (1)
mruby/mruby 1.4.1
Published Jun 12, 2018
Tracked Since Feb 18, 2026