Details of VAR-202106-0920

ID

VAR-202106-0920

CVE

CVE-2021-21280

TITLE

Contiki-NG Out-of-bounds Vulnerability in Microsoft

Trust: 0.8

sources: JVNDB: JVNDB-2021-008106

DESCRIPTION

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround. Contiki-NG Is vulnerable to an out-of-bounds write.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Attackers can use this vulnerability to cause out-of-bounds writes. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. Contiki-NG has a buffer error vulnerability. The vulnerability originated in versions prior to 4.6

Trust: 3.24

sources: NVD: CVE-2021-21280 // JVNDB: JVNDB-2021-008106 // CNVD: CNVD-2021-44271 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202106-1426

IOT TAXONOMY

category:

['IoT']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-44271

AFFECTED PRODUCTS

vendor:	contiki ng	model:	contiki-ng	scope:	lt	version:	4.6	Trust: 1.6
vendor:	contiki ng	model:	contiki-ng	scope:	eq	version:	4.6	Trust: 0.8
vendor:	contiki ng	model:	contiki-ng	scope:	eq	version:	-	Trust: 0.8

sources: CNVD: CNVD-2021-44271 // JVNDB: JVNDB-2021-008106 // NVD: CVE-2021-21280

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-21280
value:	CRITICAL
Trust: 1.0
security-advisories@github.com:	CVE-2021-21280
value:	HIGH
Trust: 1.0
NVD:	CVE-2021-21280
value:	CRITICAL
Trust: 0.8
CNVD:	CNVD-2021-44271
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202104-975
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202106-1426
value:	CRITICAL
Trust: 0.6

nvd@nist.gov:	CVE-2021-21280
severity:	HIGH
baseScore:	7.5
vectorString:	AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
CNVD:	CNVD-2021-44271
severity:	HIGH
baseScore:	7.5
vectorString:	AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2021-21280
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	5.9
version:	3.1
Trust: 1.0
security-advisories@github.com:	CVE-2021-21280
baseSeverity:	HIGH
baseScore:	8.6
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	LOW
integrityImpact:	LOW
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	4.7
version:	3.1
Trust: 1.0
NVD:	CVE-2021-21280
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	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: CNVD: CNVD-2021-44271 // JVNDB: JVNDB-2021-008106 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202106-1426 // NVD: CVE-2021-21280 // NVD: CVE-2021-21280

PROBLEMTYPE DATA

problemtype:	CWE-787	Trust: 1.0
problemtype:	Out-of-bounds writing (CWE-787) [ Other ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-008106 // NVD: CVE-2021-21280

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202106-1426

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202104-975

PATCH

title:	Prevent out-of-bounds write when processing external headers in sicslowpan #1409 GitHub	url:	https://github.com/contiki-ng/contiki-ng/pull/1409	Trust: 0.8
title:	Patch for Contiki-NG out-of-bounds write vulnerability	url:	https://www.cnvd.org.cn/patchInfo/show/274516	Trust: 0.6
title:	Contiki-NG Buffer error vulnerability fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=154494	Trust: 0.6

sources: CNVD: CNVD-2021-44271 // JVNDB: JVNDB-2021-008106 // CNNVD: CNNVD-202106-1426

EXTERNAL IDS

db:	NVD	id:	CVE-2021-21280	Trust: 3.8
db:	JVNDB	id:	JVNDB-2021-008106	Trust: 0.8
db:	CNVD	id:	CNVD-2021-44271	Trust: 0.6
db:	CS-HELP	id:	SB2021041363	Trust: 0.6
db:	CNNVD	id:	CNNVD-202104-975	Trust: 0.6
db:	CS-HELP	id:	SB2021062407	Trust: 0.6
db:	CNNVD	id:	CNNVD-202106-1426	Trust: 0.6

sources: CNVD: CNVD-2021-44271 // JVNDB: JVNDB-2021-008106 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202106-1426 // NVD: CVE-2021-21280

REFERENCES

url:	https://github.com/contiki-ng/contiki-ng/pull/1409	Trust: 1.6
url:	https://github.com/contiki-ng/contiki-ng/security/advisories/ghsa-r768-hrhf-v592	Trust: 1.6
url:	https://nvd.nist.gov/vuln/detail/cve-2021-21280	Trust: 1.4
url:	https://www.cybersecurity-help.cz/vdb/sb2021041363	Trust: 0.6
url:	https://www.cybersecurity-help.cz/vdb/sb2021062407	Trust: 0.6

sources: CNVD: CNVD-2021-44271 // JVNDB: JVNDB-2021-008106 // CNNVD: CNNVD-202104-975 // CNNVD: CNNVD-202106-1426 // NVD: CVE-2021-21280

SOURCES

db:	CNVD	id:	CNVD-2021-44271
db:	JVNDB	id:	JVNDB-2021-008106
db:	CNNVD	id:	CNNVD-202104-975
db:	CNNVD	id:	CNNVD-202106-1426
db:	NVD	id:	CVE-2021-21280

LAST UPDATE DATE

2024-08-14T12:16:24.761000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-44271	date:	2021-06-23T00:00:00
db:	JVNDB	id:	JVNDB-2021-008106	date:	2022-03-03T09:09:00
db:	CNNVD	id:	CNNVD-202104-975	date:	2021-04-14T00:00:00
db:	CNNVD	id:	CNNVD-202106-1426	date:	2021-06-28T00:00:00
db:	NVD	id:	CVE-2021-21280	date:	2021-06-22T19:25:49.543

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-44271	date:	2021-06-23T00:00:00
db:	JVNDB	id:	JVNDB-2021-008106	date:	2022-03-03T00:00:00
db:	CNNVD	id:	CNNVD-202104-975	date:	2021-04-13T00:00:00
db:	CNNVD	id:	CNNVD-202106-1426	date:	2021-06-18T00:00:00
db:	NVD	id:	CVE-2021-21280	date:	2021-06-18T21:15:07.750