CVE-2018-12247 — NULL Pointer Dereference in Mruby

CWE-476 — NULL Pointer Dereference4 documents4 sources
Severity
7.5HIGHNVD
EPSS
0.3%
top 48.98%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
MrubyDebian Mruby
Timeline
PublishedJun 12
Latest updateMay 14

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).

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDmruby/mruby1.4.1
▶debiandebian/mruby

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-8j6c-c99j-fh4c: An issue was discovered in mruby 1↗2022-05-14
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OSV
CVE-2018-12247: An issue was discovered in mruby 1↗2018-06-12
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📋Vendor Advisories

1
Debian
CVE-2018-12247: mruby - An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in m...↗2018
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