Details of VAR-202011-0400

ID

VAR-202011-0400

CVE

CVE-2020-26521

TITLE

NATS nats-server In NULL Pointer dereference vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2020-013019

DESCRIPTION

The JWT library in NATS nats-server before 2.1.9 allows a denial of service (a nil dereference in Go code). NATS Server is an open source messaging system. The system is mainly used for cloud-native applications, IoT messaging, and microservice architecture

Trust: 2.16

sources: NVD: CVE-2020-26521 // JVNDB: JVNDB-2020-013019 // CNNVD: CNNVD-202011-672

AFFECTED PRODUCTS

vendor:	fedoraproject	model:	fedora	scope:	eq	version:	33	Trust: 1.0
vendor:	linuxfoundation	model:	nats-server	scope:	lt	version:	2.1.9	Trust: 1.0
vendor:	nats	model:	server	scope:	eq	version:	2.1.9	Trust: 0.8
vendor:	nats	model:	server	scope:	eq	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2020-013019 // NVD: CVE-2020-26521

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-26521
value:	HIGH
Trust: 1.0
NVD:	CVE-2020-26521
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-202011-672
value:	HIGH
Trust: 0.6

nvd@nist.gov:	CVE-2020-26521
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8

nvd@nist.gov:	CVE-2020-26521
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2020-26521
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2020-013019 // CNNVD: CNNVD-202011-672 // NVD: CVE-2020-26521

PROBLEMTYPE DATA

problemtype:	CWE-476	Trust: 1.0
problemtype:	NULL Pointer dereference (CWE-476) [NVD Evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2020-013019 // NVD: CVE-2020-26521

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202011-672

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202011-672

PATCH

title:	nats-server	url:	https://github.com/nats-io/nats-server/commits/master	Trust: 0.8
title:	NATS nats-server Fixes for code issue vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=133810	Trust: 0.6

sources: JVNDB: JVNDB-2020-013019 // CNNVD: CNNVD-202011-672

EXTERNAL IDS

db:	OPENWALL	id:	OSS-SECURITY/2020/11/02/2	Trust: 2.4
db:	NVD	id:	CVE-2020-26521	Trust: 2.4
db:	JVNDB	id:	JVNDB-2020-013019	Trust: 0.8
db:	CNNVD	id:	CNNVD-202011-672	Trust: 0.6

sources: JVNDB: JVNDB-2020-013019 // CNNVD: CNNVD-202011-672 // NVD: CVE-2020-26521

REFERENCES

url:	http://www.openwall.com/lists/oss-security/2020/11/02/2	Trust: 2.4
url:	https://github.com/nats-io/nats-server/commits/master	Trust: 1.6
url:	https://nvd.nist.gov/vuln/detail/cve-2020-26521	Trust: 1.4
url:	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/vt67xcliibyrt762svfbyfftqfvsm3si/	Trust: 1.0
url:	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/vt67xcliibyrt762svfbyfftqfvsm3si/	Trust: 0.6

sources: JVNDB: JVNDB-2020-013019 // CNNVD: CNNVD-202011-672 // NVD: CVE-2020-26521

SOURCES

db:	JVNDB	id:	JVNDB-2020-013019
db:	CNNVD	id:	CNNVD-202011-672
db:	NVD	id:	CVE-2020-26521

LAST UPDATE DATE

2024-11-23T22:16:16.710000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2020-013019	date:	2021-06-17T06:12:00
db:	CNNVD	id:	CNNVD-202011-672	date:	2021-01-12T00:00:00
db:	NVD	id:	CVE-2020-26521	date:	2024-11-21T05:19:59.290

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2020-013019	date:	2021-06-17T00:00:00
db:	CNNVD	id:	CNNVD-202011-672	date:	2020-11-06T00:00:00
db:	NVD	id:	CVE-2020-26521	date:	2020-11-06T08:15:13.563