CVE-2018-12247

CVSS V2 Medium 5 CVSS V3 High 7.5

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).

Overview

CVE ID
CVE-2018-12247

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2018-06-12T14:29:00

Last Modified Date
2018-08-01T12:08:29

Weakness Enumerations

CWE	URL
CWE-476	http://cwe.mitre.org/data/definitions/476.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:mruby:mruby:1.4.1:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

Reference URL	Reference Tags
https://github.com/mruby/mruby/issues/4036	Issue Tracking Third Party Advisory
https://github.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2	Patch Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2018-12247
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12247

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 18:40:42				Added to TrackCVE
2022-12-03 07:57:04	2018-06-12T14:29Z	2018-06-12T14:29:00	CVE Published Date	updated
2022-12-03 07:57:04		2018-08-01T12:08:29	CVE Modified Date	updated
2022-12-03 07:57:04		Analyzed	Vulnerability Status	updated