Details of VAR-202112-0261

ID

VAR-202112-0261

CVE

CVE-2020-12140

TITLE

Contiki-NG Classic buffer overflow vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-016028

DESCRIPTION

A buffer overflow in os/net/mac/ble/ble-l2cap.c in the BLE stack in Contiki-NG 4.4 and earlier allows an attacker to execute arbitrary code via malicious L2CAP frames. Contiki-NG Exists in a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. Contiki-NG is an open source cross-platform operating system for next-generation IoT (Internet of Things) devices. There is a security vulnerability in os/net/mac/ble/ble-l2cap.c in the ble stack of Contiki-NG 4.4 and earlier versions

Trust: 2.16

sources: NVD: CVE-2020-12140 // JVNDB: JVNDB-2021-016028 // CNNVD: CNNVD-202112-479

AFFECTED PRODUCTS

vendor:	contiki ng	model:	contiki-ng	scope:	lte	version:	4.4	Trust: 1.0
vendor:	contiki ng	model:	contiki-ng	scope:	eq	version:	-	Trust: 0.8
vendor:	contiki ng	model:	contiki-ng	scope:	lte	version:	4.4 and earlier	Trust: 0.8

sources: JVNDB: JVNDB-2021-016028 // NVD: CVE-2020-12140

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-12140
value:	HIGH
Trust: 1.0
NVD:	CVE-2020-12140
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-202112-479
value:	HIGH
Trust: 0.6

nvd@nist.gov:	CVE-2020-12140
severity:	HIGH
baseScore:	8.3
vectorString:	AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8

nvd@nist.gov:	CVE-2020-12140
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	CVE-2020-12140
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2021-016028 // CNNVD: CNNVD-202112-479 // NVD: CVE-2020-12140

PROBLEMTYPE DATA

problemtype:	CWE-120	Trust: 1.0
problemtype:	Classic buffer overflow (CWE-120) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-016028 // NVD: CVE-2020-12140

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202112-479

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202112-479

PATCH

title:	Fix for buffer overflow in BLE L2CAP #1662	url:	https://github.com/contiki-ng/contiki-ng/pull/1662	Trust: 0.8
title:	Contiki-NG Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=173857	Trust: 0.6

sources: JVNDB: JVNDB-2021-016028 // CNNVD: CNNVD-202112-479

EXTERNAL IDS

db:	NVD	id:	CVE-2020-12140	Trust: 3.2
db:	JVNDB	id:	JVNDB-2021-016028	Trust: 0.8
db:	CNNVD	id:	CNNVD-202112-479	Trust: 0.6

sources: JVNDB: JVNDB-2021-016028 // CNNVD: CNNVD-202112-479 // NVD: CVE-2020-12140

REFERENCES

url:	https://twitter.com/scepticctf	Trust: 1.6
url:	https://github.com/contiki-ng/contiki-ng/pull/1662	Trust: 1.6
url:	https://nvd.nist.gov/vuln/detail/cve-2020-12140	Trust: 1.4

sources: JVNDB: JVNDB-2021-016028 // CNNVD: CNNVD-202112-479 // NVD: CVE-2020-12140

SOURCES

db:	JVNDB	id:	JVNDB-2021-016028
db:	CNNVD	id:	CNNVD-202112-479
db:	NVD	id:	CVE-2020-12140

LAST UPDATE DATE

2024-08-14T15:27:33.682000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2021-016028	date:	2022-12-05T06:55:00
db:	CNNVD	id:	CNNVD-202112-479	date:	2021-12-15T00:00:00
db:	NVD	id:	CVE-2020-12140	date:	2021-12-09T16:50:06.687

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2021-016028	date:	2022-12-05T00:00:00
db:	CNNVD	id:	CNNVD-202112-479	date:	2021-12-07T00:00:00
db:	NVD	id:	CVE-2020-12140	date:	2021-12-07T19:15:07.370