Details of VAR-202001-0494

ID

VAR-202001-0494

CVE

CVE-2019-16027

TITLE

Cisco IOS XR Input validation vulnerability in software

Trust: 0.8

sources: JVNDB: JVNDB-2019-014405

DESCRIPTION

A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS–IS process. An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. A successful exploit could allow the attacker to cause a DoS condition in the IS–IS process. Cisco IOS XR is an operating system developed by Cisco for its network equipment. The following products and versions are affected: Cisco IOS XR prior to 6.6.3, prior to 7.0.2, prior to 7.1.1, and prior to 7.2.1

Trust: 1.71

sources: NVD: CVE-2019-16027 // JVNDB: JVNDB-2019-014405 // VULHUB: VHN-148132

AFFECTED PRODUCTS

vendor:	cisco	model:	ios xr	scope:	eq	version:	6.1.3	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.2.3	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.6.25	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.6.2	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.1.2	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.4.2	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.2.2	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.3.15	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.2.25	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.1.4	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.3.2	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	5.2.5	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.6.1	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.5.3	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.5.2	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	6.3.3	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	eq	version:	4.3.2	Trust: 1.0
vendor:	シスコシステムズ	model:	cisco ios xr	scope:	eq	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2019-014405 // NVD: CVE-2019-16027

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2019-16027
value:	MEDIUM
Trust: 1.0
ykramarz@cisco.com:	CVE-2019-16027
value:	HIGH
Trust: 1.0
NVD:	CVE-2019-16027
value:	MEDIUM
Trust: 0.8
CNNVD:	CNNVD-202001-1121
value:	MEDIUM
Trust: 0.6
VULHUB:	VHN-148132
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2019-16027
severity:	MEDIUM
baseScore:	4.0
vectorString:	AV:N/AC:L/AU:S/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
VULHUB:	VHN-148132
severity:	MEDIUM
baseScore:	4.0
vectorString:	AV:N/AC:L/AU:S/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2019-16027
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	3.6
version:	3.1
Trust: 1.0
ykramarz@cisco.com:	CVE-2019-16027
baseSeverity:	HIGH
baseScore:	7.7
vectorString:	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.1
impactScore:	4.0
version:	3.0
Trust: 1.0
NVD:	CVE-2019-16027
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: VULHUB: VHN-148132 // JVNDB: JVNDB-2019-014405 // CNNVD: CNNVD-202001-1121 // NVD: CVE-2019-16027 // NVD: CVE-2019-16027

PROBLEMTYPE DATA

problemtype:	CWE-20	Trust: 1.1
problemtype:	Incorrect input confirmation (CWE-20) [NVD Evaluation ]	Trust: 0.8

sources: VULHUB: VHN-148132 // JVNDB: JVNDB-2019-014405 // NVD: CVE-2019-16027

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202001-1121

TYPE

input validation error

Trust: 0.6

sources: CNNVD: CNNVD-202001-1121

PATCH

title:	cisco-sa-20200122-ios-xr-dos	url:	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-dos	Trust: 0.8
title:	Cisco IOS XR Enter the fix for the verification error vulnerability	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=107386	Trust: 0.6

sources: JVNDB: JVNDB-2019-014405 // CNNVD: CNNVD-202001-1121

EXTERNAL IDS

db:	NVD	id:	CVE-2019-16027	Trust: 2.5
db:	JVNDB	id:	JVNDB-2019-014405	Trust: 0.8
db:	CNNVD	id:	CNNVD-202001-1121	Trust: 0.7
db:	AUSCERT	id:	ESB-2020.0622	Trust: 0.6
db:	AUSCERT	id:	ESB-2020.0421	Trust: 0.6
db:	CNVD	id:	CNVD-2020-07220	Trust: 0.1
db:	VULHUB	id:	VHN-148132	Trust: 0.1

sources: VULHUB: VHN-148132 // JVNDB: JVNDB-2019-014405 // CNNVD: CNNVD-202001-1121 // NVD: CVE-2019-16027

REFERENCES

url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-20200122-ios-xr-dos	Trust: 1.7
url:	https://nvd.nist.gov/vuln/detail/cve-2019-16027	Trust: 1.4
url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/ cisco-sa-20200122-ios-xr-dos	Trust: 0.6
url:	https://vigilance.fr/vulnerability/cisco-ios-xr-denial-of-service-via-is-is-snmp-31401	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2020.0421/	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2020.0622/	Trust: 0.6

sources: VULHUB: VHN-148132 // JVNDB: JVNDB-2019-014405 // CNNVD: CNNVD-202001-1121 // NVD: CVE-2019-16027

SOURCES

db:	VULHUB	id:	VHN-148132
db:	JVNDB	id:	JVNDB-2019-014405
db:	CNNVD	id:	CNNVD-202001-1121
db:	NVD	id:	CVE-2019-16027

LAST UPDATE DATE

2024-08-14T15:43:30.199000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-148132	date:	2022-05-12T00:00:00
db:	JVNDB	id:	JVNDB-2019-014405	date:	2020-02-14T00:00:00
db:	CNNVD	id:	CNNVD-202001-1121	date:	2022-05-05T00:00:00
db:	NVD	id:	CVE-2019-16027	date:	2022-05-12T18:09:56.357

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-148132	date:	2020-01-26T00:00:00
db:	JVNDB	id:	JVNDB-2019-014405	date:	2020-02-14T00:00:00
db:	CNNVD	id:	CNNVD-202001-1121	date:	2020-01-26T00:00:00
db:	NVD	id:	CVE-2019-16027	date:	2020-01-26T05:15:16.677