Details of VAR-202012-0485

ID

VAR-202012-0485

CVE

CVE-2020-24336

TITLE

Embedded TCP/IP stacks have memory corruption vulnerabilities

Trust: 0.8

sources: CERT/CC: VU#815128

DESCRIPTION

An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. The code for parsing Type A domain name answers in ip64-dns64.c doesn't verify whether the address in the answer's length is sane. Therefore, when copying an address of an arbitrary length, a buffer overflow can occur. This bug can be exploited whenever NAT64 is enabled. Multiple open-source embedded TCP/IP stacks, commonly used in Internet of Things (IoT) and embedded devices, have several vulnerabilities stemming from improper memory management. These vulnerabilities are also tracked as ICS-VU-633937 and JVNVU#96491057 as well as the name AMNESIA:33.CVE-2020-13984 Not Affected CVE-2020-13985 Affected CVE-2020-13986 Affected CVE-2020-13987 Affected CVE-2020-13988 Affected CVE-2020-17437 Affected CVE-2020-17438 Affected CVE-2020-17439 Affected CVE-2020-17440 Affected CVE-2020-17441 Not Affected CVE-2020-17442 Not Affected CVE-2020-17443 Not Affected CVE-2020-17444 Not Affected CVE-2020-17445 Not Affected CVE-2020-17467 Not Affected CVE-2020-17468 Not Affected CVE-2020-17469 Not Affected CVE-2020-17470 Not Affected CVE-2020-24334 Affected CVE-2020-24335 Not Affected CVE-2020-24336 Affected CVE-2020-24337 Not Affected CVE-2020-24338 Not Affected CVE-2020-24339 Not Affected CVE-2020-24340 Not Affected CVE-2020-24341 Not Affected CVE-2020-24383 Not Affected CVE-2020-25107 Not Affected CVE-2020-25108 Not Affected CVE-2020-25109 Not Affected CVE-2020-25110 Not Affected CVE-2020-25111 Not Affected CVE-2020-25112 Not Affected CVE-2021-28362 Not AffectedCVE-2020-13984 Not Affected CVE-2020-13985 Affected CVE-2020-13986 Affected CVE-2020-13987 Affected CVE-2020-13988 Affected CVE-2020-17437 Affected CVE-2020-17438 Affected CVE-2020-17439 Affected CVE-2020-17440 Affected CVE-2020-17441 Not Affected CVE-2020-17442 Not Affected CVE-2020-17443 Not Affected CVE-2020-17444 Not Affected CVE-2020-17445 Not Affected CVE-2020-17467 Not Affected CVE-2020-17468 Not Affected CVE-2020-17469 Not Affected CVE-2020-17470 Not Affected CVE-2020-24334 Affected CVE-2020-24335 Not Affected CVE-2020-24336 Affected CVE-2020-24337 Not Affected CVE-2020-24338 Not Affected CVE-2020-24339 Not Affected CVE-2020-24340 Not Affected CVE-2020-24341 Not Affected CVE-2020-24383 Not Affected CVE-2020-25107 Not Affected CVE-2020-25108 Not Affected CVE-2020-25109 Not Affected CVE-2020-25110 Not Affected CVE-2020-25111 Not Affected CVE-2020-25112 Not Affected CVE-2021-28362 Not Affected. Contiki is an open source cross-platform operating system for IoT (Internet of Things) devices. Contiki-NG is an open source cross-platform operating system for next-generation IoT (Internet of Things) devices. Contiki-NG and Contiki have a buffer error vulnerability. The vulnerability stems from the fact that the function that parses the DNS record in the DNS response packet sent through NAT64 does not verify the length field of the response record, allowing an attacker to destroy the memory. An issue exists in Contiki up to and including 3.0 and Contiki-NG up to and including 4.5

Trust: 2.25

sources: NVD: CVE-2020-24336 // CERT/CC: VU#815128 // CNNVD: CNNVD-202012-644 // VULMON: CVE-2020-24336

AFFECTED PRODUCTS

vendor:	contiki ng	model:	contiki-ng	scope:	lte	version:	4.5	Trust: 1.0
vendor:	contiki os	model:	contiki	scope:	lte	version:	3.0	Trust: 1.0

sources: NVD: CVE-2020-24336

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-24336
value:	CRITICAL
Trust: 1.0
CNNVD:	CNNVD-202012-644
value:	CRITICAL
Trust: 0.6
VULMON:	CVE-2020-24336
value:	HIGH
Trust: 0.1

nvd@nist.gov:	CVE-2020-24336
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: 1.1

nvd@nist.gov:	CVE-2020-24336
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

sources: VULMON: CVE-2020-24336 // CNNVD: CNNVD-202012-644 // NVD: CVE-2020-24336

PROBLEMTYPE DATA

problemtype:

CWE-120

Trust: 1.0

sources: NVD: CVE-2020-24336

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202012-644

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202012-644

PATCH

title:

Brocade Security Advisories: Access Denied Access Denied

url:

https://vulmon.com/vendoradvisory?qidtp=brocade_security_advisories&qid=54887b0d314c8021dc2d190abfce740d

Trust: 0.1

sources: VULMON: CVE-2020-24336

EXTERNAL IDS

db:	NVD	id:	CVE-2020-24336	Trust: 2.5
db:	CERT/CC	id:	VU#815128	Trust: 2.5
db:	ICS CERT	id:	ICSA-20-343-01	Trust: 1.7
db:	AUSCERT	id:	ESB-2020.4363	Trust: 0.6
db:	CNNVD	id:	CNNVD-202012-644	Trust: 0.6
db:	VULMON	id:	CVE-2020-24336	Trust: 0.1

sources: CERT/CC: VU#815128 // VULMON: CVE-2020-24336 // CNNVD: CNNVD-202012-644 // NVD: CVE-2020-24336

REFERENCES

url:	https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01	Trust: 1.7
url:	https://www.kb.cert.org/vuls/id/815128	Trust: 1.7
url:	cve-2020-13984	Trust: 0.8
url:	cve-2020-13985	Trust: 0.8
url:	cve-2020-13986	Trust: 0.8
url:	cve-2020-13987	Trust: 0.8
url:	cve-2020-13988	Trust: 0.8
url:	cve-2020-17437	Trust: 0.8
url:	cve-2020-17438	Trust: 0.8
url:	cve-2020-17439	Trust: 0.8
url:	cve-2020-17440	Trust: 0.8
url:	cve-2020-17441	Trust: 0.8
url:	cve-2020-17442	Trust: 0.8
url:	cve-2020-17443	Trust: 0.8
url:	cve-2020-17444	Trust: 0.8
url:	cve-2020-17445	Trust: 0.8
url:	cve-2020-17467	Trust: 0.8
url:	cve-2020-17468	Trust: 0.8
url:	cve-2020-17469	Trust: 0.8
url:	cve-2020-17470	Trust: 0.8
url:	cve-2020-24334	Trust: 0.8
url:	cve-2020-24335	Trust: 0.8
url:	cve-2020-24336	Trust: 0.8
url:	cve-2020-24337	Trust: 0.8
url:	cve-2020-24338	Trust: 0.8
url:	cve-2020-24339	Trust: 0.8
url:	cve-2020-24340	Trust: 0.8
url:	cve-2020-24341	Trust: 0.8
url:	cve-2020-24383	Trust: 0.8
url:	cve-2020-25107	Trust: 0.8
url:	cve-2020-25108	Trust: 0.8
url:	cve-2020-25109	Trust: 0.8
url:	cve-2020-25110	Trust: 0.8
url:	cve-2020-25111	Trust: 0.8
url:	cve-2020-25112	Trust: 0.8
url:	cve-2021-28362	Trust: 0.8
url:	https://nvd.nist.gov/vuln/detail/cve-2020-24336	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2020.4363/	Trust: 0.6
url:	https://cwe.mitre.org/data/definitions/120.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1
url:	https://support.broadcom.com/external/content/securityadvisories/0/21596	Trust: 0.1

sources: CERT/CC: VU#815128 // VULMON: CVE-2020-24336 // CNNVD: CNNVD-202012-644 // NVD: CVE-2020-24336

CREDITS

This document was written by Vijay Sarvepalli.Statement Date: December 08, 2020

Trust: 0.8

sources: CERT/CC: VU#815128

SOURCES

db:	CERT/CC	id:	VU#815128
db:	VULMON	id:	CVE-2020-24336
db:	CNNVD	id:	CNNVD-202012-644
db:	NVD	id:	CVE-2020-24336

LAST UPDATE DATE

2024-08-14T13:10:52.564000+00:00

SOURCES UPDATE DATE

db:	CERT/CC	id:	VU#815128	date:	2021-05-11T00:00:00
db:	VULMON	id:	CVE-2020-24336	date:	2020-12-15T00:00:00
db:	CNNVD	id:	CNNVD-202012-644	date:	2020-12-16T00:00:00
db:	NVD	id:	CVE-2020-24336	date:	2020-12-15T14:47:24.727

SOURCES RELEASE DATE

db:	CERT/CC	id:	VU#815128	date:	2020-12-08T00:00:00
db:	VULMON	id:	CVE-2020-24336	date:	2020-12-11T00:00:00
db:	CNNVD	id:	CNNVD-202012-644	date:	2020-12-08T00:00:00
db:	NVD	id:	CVE-2020-24336	date:	2020-12-11T23:15:13.870