Details of VAR-201907-0230

ID

VAR-201907-0230

CVE

CVE-2019-1886

TITLE

Cisco Web Security Appliance Input validation vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2019-006270

DESCRIPTION

A vulnerability in the HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Secure Sockets Layer (SSL) server certificates. An attacker could exploit this vulnerability by installing a malformed certificate in a web server and sending a request to it through the Cisco WSA. A successful exploit could allow the attacker to cause an unexpected restart of the proxy process on an affected device. The device provides SaaS-based access control, real-time network reporting and tracking, and security policy development. AsyncOS Software is a set of operating systems used in it. This issue is being tracked by Cisco Bug ID CSCvo33747

Trust: 2.52

sources: NVD: CVE-2019-1886 // JVNDB: JVNDB-2019-006270 // CNVD: CNVD-2019-25710 // BID: 109049 // VULHUB: VHN-151248

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2019-25710

AFFECTED PRODUCTS

vendor:	cisco	model:	web security appliance	scope:	eq	version:	10.5.2-072	Trust: 1.3
vendor:	cisco	model:	web security appliance	scope:	eq	version:	10.5.3-025	Trust: 1.3
vendor:	cisco	model:	asyncos	scope:	lt	version:	11.5.2-020	Trust: 1.0
vendor:	cisco	model:	asyncos	scope:	gte	version:	11.5	Trust: 1.0
vendor:	cisco	model:	asyncos	scope:	lt	version:	10.5.5-005	Trust: 1.0
vendor:	cisco	model:	asyncos	scope:	gte	version:	10.5	Trust: 1.0
vendor:	cisco	model:	web security appliance	scope:	eq	version:	11.7.0-fcs-334	Trust: 1.0
vendor:	cisco	model:	asyncos	scope:	-	version:	-	Trust: 0.8
vendor:	cisco	model:	web security the appliance	scope:	-	version:	-	Trust: 0.8
vendor:	cisco	model:	web security appliance	scope:	-	version:	-	Trust: 0.6
vendor:	cisco	model:	web security appliance 11.7.0-fcs-334	scope:	-	version:	-	Trust: 0.3
vendor:	cisco	model:	asyncos software	scope:	eq	version:	11.5	Trust: 0.3
vendor:	cisco	model:	asyncos software	scope:	eq	version:	10.5	Trust: 0.3
vendor:	cisco	model:	asyncos software	scope:	eq	version:	10.1	Trust: 0.3
vendor:	cisco	model:	asyncos software	scope:	eq	version:	10.0	Trust: 0.3
vendor:	cisco	model:	web security appliance 11.7.0-fcs-418	scope:	ne	version:	-	Trust: 0.3
vendor:	cisco	model:	web security appliance	scope:	ne	version:	11.7.0-418	Trust: 0.3
vendor:	cisco	model:	web security appliance	scope:	ne	version:	11.7.0-406	Trust: 0.3
vendor:	cisco	model:	web security appliance	scope:	ne	version:	11.5.2-020	Trust: 0.3
vendor:	cisco	model:	web security appliance	scope:	ne	version:	10.5.5-005	Trust: 0.3
vendor:	cisco	model:	asyncos software	scope:	ne	version:	11.5.2-020	Trust: 0.3
vendor:	cisco	model:	asyncos software	scope:	ne	version:	10.5.5-005	Trust: 0.3

sources: CNVD: CNVD-2019-25710 // BID: 109049 // JVNDB: JVNDB-2019-006270 // NVD: CVE-2019-1886

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2019-1886
value:	HIGH
Trust: 1.0
ykramarz@cisco.com:	CVE-2019-1886
value:	HIGH
Trust: 1.0
NVD:	CVE-2019-1886
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2019-25710
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-201907-237
value:	HIGH
Trust: 0.6
VULHUB:	VHN-151248
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2019-1886
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
CNVD:	CNVD-2019-25710
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: 0.6
VULHUB:	VHN-151248
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: 0.1

nvd@nist.gov:	CVE-2019-1886
baseSeverity:	HIGH
baseScore:	8.6
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	4.0
version:	3.1
Trust: 1.0
ykramarz@cisco.com:	CVE-2019-1886
baseSeverity:	HIGH
baseScore:	8.6
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	4.0
version:	3.0
Trust: 1.0
NVD:	CVE-2019-1886
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: CNVD: CNVD-2019-25710 // VULHUB: VHN-151248 // JVNDB: JVNDB-2019-006270 // CNNVD: CNNVD-201907-237 // NVD: CVE-2019-1886 // NVD: CVE-2019-1886

PROBLEMTYPE DATA

problemtype:	CWE-20	Trust: 1.9
problemtype:	CWE-295	Trust: 1.1

sources: VULHUB: VHN-151248 // JVNDB: JVNDB-2019-006270 // NVD: CVE-2019-1886

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-201907-237

TYPE

trust management problem

Trust: 0.6

sources: CNNVD: CNNVD-201907-237

CONFIGURATIONS

sources: JVNDB: JVNDB-2019-006270

PATCH

title:	cisco-sa-20190703-wsa-dos	url:	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-wsa-dos	Trust: 0.8
title:	Patch for Cisco Web Security Appliance AsyncOS Software Input Validation Error Vulnerability (CNVD-2019-25710)	url:	https://www.cnvd.org.cn/patchInfo/show/172965	Trust: 0.6
title:	Cisco Web Security Appliance AsyncOS Software Enter the fix for the verification error vulnerability	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=94426	Trust: 0.6

sources: CNVD: CNVD-2019-25710 // JVNDB: JVNDB-2019-006270 // CNNVD: CNNVD-201907-237

EXTERNAL IDS

db:	NVD	id:	CVE-2019-1886	Trust: 3.4
db:	BID	id:	109049	Trust: 2.6
db:	JVNDB	id:	JVNDB-2019-006270	Trust: 0.8
db:	CNNVD	id:	CNNVD-201907-237	Trust: 0.7
db:	CNVD	id:	CNVD-2019-25710	Trust: 0.6
db:	AUSCERT	id:	ESB-2019.2446	Trust: 0.6
db:	VULHUB	id:	VHN-151248	Trust: 0.1

sources: CNVD: CNVD-2019-25710 // VULHUB: VHN-151248 // BID: 109049 // JVNDB: JVNDB-2019-006270 // CNNVD: CNNVD-201907-237 // NVD: CVE-2019-1886

REFERENCES

url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-20190703-wsa-dos	Trust: 2.6
url:	http://www.securityfocus.com/bid/109049	Trust: 2.3
url:	https://nvd.nist.gov/vuln/detail/cve-2019-1886	Trust: 1.4
url:	http://www.cisco.com/	Trust: 0.9
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2019-1886	Trust: 0.8
url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-20190703-asyncos-wsa	Trust: 0.6
url:	https://vigilance.fr/vulnerability/cisco-web-security-appliance-denial-of-service-via-https-certificate-29693	Trust: 0.6
url:	https://www.auscert.org.au/bulletins/esb-2019.2446/	Trust: 0.6

sources: CNVD: CNVD-2019-25710 // VULHUB: VHN-151248 // BID: 109049 // JVNDB: JVNDB-2019-006270 // CNNVD: CNNVD-201907-237 // NVD: CVE-2019-1886

CREDITS

Cisco

Trust: 0.9

sources: BID: 109049 // CNNVD: CNNVD-201907-237

SOURCES

db:	CNVD	id:	CNVD-2019-25710
db:	VULHUB	id:	VHN-151248
db:	BID	id:	109049
db:	JVNDB	id:	JVNDB-2019-006270
db:	CNNVD	id:	CNNVD-201907-237
db:	NVD	id:	CVE-2019-1886

LAST UPDATE DATE

2024-11-23T22:41:28.414000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2019-25710	date:	2019-08-02T00:00:00
db:	VULHUB	id:	VHN-151248	date:	2020-10-16T00:00:00
db:	BID	id:	109049	date:	2019-07-03T00:00:00
db:	JVNDB	id:	JVNDB-2019-006270	date:	2019-07-17T00:00:00
db:	CNNVD	id:	CNNVD-201907-237	date:	2020-10-21T00:00:00
db:	NVD	id:	CVE-2019-1886	date:	2024-11-21T04:37:36.930

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2019-25710	date:	2019-08-02T00:00:00
db:	VULHUB	id:	VHN-151248	date:	2019-07-04T00:00:00
db:	BID	id:	109049	date:	2019-07-03T00:00:00
db:	JVNDB	id:	JVNDB-2019-006270	date:	2019-07-17T00:00:00
db:	CNNVD	id:	CNNVD-201907-237	date:	2019-07-03T00:00:00
db:	NVD	id:	CVE-2019-1886	date:	2019-07-04T20:15:11