Details of VAR-201907-0864

ID

VAR-201907-0864

CVE

CVE-2019-1909

TITLE

Cisco IOS XR Input validation vulnerability in software

Trust: 0.8

sources: JVNDB: JVNDB-2019-006442

DESCRIPTION

A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to incorrect processing of certain BGP update messages. An attacker could exploit this vulnerability by sending BGP update messages that include a specific set of attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic from explicitly defined peers only. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer. Cisco IOS XR The software contains an input validation vulnerability.Denial of service (DoS) May be in a state. This issue is being tracked by Cisco Bug ID CSCvo90073

Trust: 1.98

sources: NVD: CVE-2019-1909 // JVNDB: JVNDB-2019-006442 // BID: 109043 // VULHUB: VHN-151501

AFFECTED PRODUCTS

vendor:	cisco	model:	ios xr	scope:	lt	version:	6.6.2	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	gte	version:	4.3.1	Trust: 1.0
vendor:	cisco	model:	ios xr	scope:	-	version:	-	Trust: 0.8
vendor:	cisco	model:	ios xr software	scope:	eq	version:	7.0	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.5.3	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.5.2	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.5.1	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.4.2	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.3.3	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.3.2	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.3.1	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.2.3	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.1.4	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.1.2	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.1.1	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.0.1	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.6	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.5	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.4	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.3	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.2	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	eq	version:	6.1	Trust: 0.3
vendor:	cisco	model:	carrier routing system	scope:	eq	version:	6.4.2	Trust: 0.3
vendor:	cisco	model:	carrier routing system	scope:	eq	version:	6.3.2	Trust: 0.3
vendor:	cisco	model:	carrier routing system	scope:	eq	version:	5.3.4	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	99220	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	99120	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	99100	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	99040	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	99010	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	90100	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	90060	Trust: 0.3
vendor:	cisco	model:	asr router	scope:	eq	version:	90010	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	ne	version:	7.0.1	Trust: 0.3
vendor:	cisco	model:	ios xr software	scope:	ne	version:	6.6.2	Trust: 0.3

sources: BID: 109043 // JVNDB: JVNDB-2019-006442 // NVD: CVE-2019-1909

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2019-1909
value:	MEDIUM
Trust: 1.0
ykramarz@cisco.com:	CVE-2019-1909
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2019-1909
value:	MEDIUM
Trust: 0.8
CNNVD:	CNNVD-201907-225
value:	MEDIUM
Trust: 0.6
VULHUB:	VHN-151501
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2019-1909
severity:	MEDIUM
baseScore:	4.3
vectorString:	AV:N/AC:M/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.6
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
VULHUB:	VHN-151501
severity:	MEDIUM
baseScore:	4.3
vectorString:	AV:N/AC:M/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.6
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2019-1909
baseSeverity:	MEDIUM
baseScore:	5.9
vectorString:	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	HIGH
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	2.2
impactScore:	3.6
version:	3.0
Trust: 1.8
ykramarz@cisco.com:	CVE-2019-1909
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	HIGH
privilegesRequired:	NONE
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	2.2
impactScore:	4.0
version:	3.0
Trust: 1.0

sources: VULHUB: VHN-151501 // JVNDB: JVNDB-2019-006442 // CNNVD: CNNVD-201907-225 // NVD: CVE-2019-1909 // NVD: CVE-2019-1909

PROBLEMTYPE DATA

problemtype:

CWE-20

Trust: 1.9

sources: VULHUB: VHN-151501 // JVNDB: JVNDB-2019-006442 // NVD: CVE-2019-1909

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-201907-225

TYPE

input validation error

Trust: 0.6

sources: CNNVD: CNNVD-201907-225

CONFIGURATIONS

sources: JVNDB: JVNDB-2019-006442

PATCH

title:	cisco-sa-20190703-iosxr-bgp-dos	url:	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-iosxr-bgp-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=94414	Trust: 0.6

sources: JVNDB: JVNDB-2019-006442 // CNNVD: CNNVD-201907-225

EXTERNAL IDS

db:	NVD	id:	CVE-2019-1909	Trust: 2.8
db:	BID	id:	109043	Trust: 1.0
db:	JVNDB	id:	JVNDB-2019-006442	Trust: 0.8
db:	CNNVD	id:	CNNVD-201907-225	Trust: 0.7
db:	AUSCERT	id:	ESB-2019.2441.2	Trust: 0.6
db:	AUSCERT	id:	ESB-2019.2441	Trust: 0.6
db:	VULHUB	id:	VHN-151501	Trust: 0.1

sources: VULHUB: VHN-151501 // BID: 109043 // JVNDB: JVNDB-2019-006442 // CNNVD: CNNVD-201907-225 // NVD: CVE-2019-1909

REFERENCES

url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-20190703-iosxr-bgp-dos	Trust: 2.0
url:	https://nvd.nist.gov/vuln/detail/cve-2019-1909	Trust: 1.4
url:	http://www.cisco.com/	Trust: 0.9
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2019-1909	Trust: 0.8
url:	https://vigilance.fr/vulnerability/cisco-ios-xr-denial-of-service-via-bgp-29689	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2019.2441.2/	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2019.2441/	Trust: 0.6
url:	https://www.securityfocus.com/bid/109043	Trust: 0.6

sources: VULHUB: VHN-151501 // BID: 109043 // JVNDB: JVNDB-2019-006442 // CNNVD: CNNVD-201907-225 // NVD: CVE-2019-1909

CREDITS

Cisco

Trust: 0.9

sources: BID: 109043 // CNNVD: CNNVD-201907-225

SOURCES

db:	VULHUB	id:	VHN-151501
db:	BID	id:	109043
db:	JVNDB	id:	JVNDB-2019-006442
db:	CNNVD	id:	CNNVD-201907-225
db:	NVD	id:	CVE-2019-1909

LAST UPDATE DATE

2024-11-23T22:29:59.841000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-151501	date:	2019-10-09T00:00:00
db:	BID	id:	109043	date:	2019-07-03T00:00:00
db:	JVNDB	id:	JVNDB-2019-006442	date:	2019-07-19T00:00:00
db:	CNNVD	id:	CNNVD-201907-225	date:	2020-02-11T00:00:00
db:	NVD	id:	CVE-2019-1909	date:	2024-11-21T04:37:39.967

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-151501	date:	2019-07-06T00:00:00
db:	BID	id:	109043	date:	2019-07-03T00:00:00
db:	JVNDB	id:	JVNDB-2019-006442	date:	2019-07-19T00:00:00
db:	CNNVD	id:	CNNVD-201907-225	date:	2019-07-03T00:00:00
db:	NVD	id:	CVE-2019-1909	date:	2019-07-06T02:15:11.527