Details of VAR-201702-0786

ID

VAR-201702-0786

CVE

CVE-2017-3818

TITLE

Cisco ESA of AsyncOS Software MIME Vulnerability in the scanner that bypasses the user filter set on the device

Trust: 0.8

sources: JVNDB: JVNDB-2017-001722

DESCRIPTION

A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device, aka a Malformed MIME Header Filtering Bypass. This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Email Security Appliances, both virtual and hardware appliances, if the software is configured to apply a message filter or content filter to incoming email attachments. More Information: CSCvb65245. Known Affected Releases: 9.7.1-066. Known Fixed Releases: 9.8.0-092. This vulnerability " Malformed MIME Avoid header filtering (Malformed MIME Header Filtering Bypass)" It is called. CiscoAsyncOSSoftwarefor CiscoEmailSecurityAppliances (ESA) is a set of operating systems used by Cisco Systems in the Email Security Appliance (ESA). An attacker can exploit this issue to bypass security restrictions and perform unauthorized actions. This may aid in further attacks. This issue is being tracked by Cisco Bug ID CSCvb65245

Trust: 2.52

sources: NVD: CVE-2017-3818 // JVNDB: JVNDB-2017-001722 // CNVD: CNVD-2017-01167 // BID: 95939 // VULHUB: VHN-112021

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2017-01167

AFFECTED PRODUCTS

vendor:	cisco	model:	email security appliance	scope:	eq	version:	9.7.1-066	Trust: 2.5
vendor:	cisco	model:	asyncos software	scope:	eq	version:	0	Trust: 0.9
vendor:	cisco	model:	e email security the appliance	scope:	eq	version:	9.7.1-066	Trust: 0.8
vendor:	cisco	model:	email security appliance	scope:	ne	version:	9.8.0-092	Trust: 0.3

sources: CNVD: CNVD-2017-01167 // BID: 95939 // JVNDB: JVNDB-2017-001722 // CNNVD: CNNVD-201702-016 // NVD: CVE-2017-3818

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2017-3818
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2017-3818
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2017-01167
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-201702-016
value:	MEDIUM
Trust: 0.6
VULHUB:	VHN-112021
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2017-3818
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:P/A:N
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	PARTIAL
availabilityImpact:	NONE
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
CNVD:	CNVD-2017-01167
severity:	MEDIUM
baseScore:	4.3
vectorString:	AV:N/AC:M/AU:N/C:N/I:P/A:N
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	PARTIAL
availabilityImpact:	NONE
exploitabilityScore:	8.6
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6
VULHUB:	VHN-112021
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:P/A:N
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	PARTIAL
availabilityImpact:	NONE
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-2017-3818
baseSeverity:	MEDIUM
baseScore:	5.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	CHANGED
confidentialityImpact:	NONE
integrityImpact:	LOW
availabilityImpact:	NONE
exploitabilityScore:	3.9
impactScore:	1.4
version:	3.0
Trust: 1.8

sources: CNVD: CNVD-2017-01167 // VULHUB: VHN-112021 // JVNDB: JVNDB-2017-001722 // CNNVD: CNNVD-201702-016 // NVD: CVE-2017-3818

PROBLEMTYPE DATA

problemtype:

CWE-20

Trust: 1.9

sources: VULHUB: VHN-112021 // JVNDB: JVNDB-2017-001722 // NVD: CVE-2017-3818

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-201702-016

TYPE

input validation

Trust: 0.6

sources: CNNVD: CNNVD-201702-016

CONFIGURATIONS

sources: JVNDB: JVNDB-2017-001722

PATCH

title:	cisco-sa-20170201-esa1	url:	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170201-esa1	Trust: 0.8
title:	CiscoEmailSecurityApplianceforAsyncOS security bypass vulnerability patch	url:	https://www.cnvd.org.cn/patchInfo/show/88869	Trust: 0.6
title:	Cisco AsyncOS Software for Cisco Email Security Appliances Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=67406	Trust: 0.6

sources: CNVD: CNVD-2017-01167 // JVNDB: JVNDB-2017-001722 // CNNVD: CNNVD-201702-016

EXTERNAL IDS

db:	NVD	id:	CVE-2017-3818	Trust: 3.4
db:	BID	id:	95939	Trust: 2.0
db:	SECTRACK	id:	1037773	Trust: 1.1
db:	JVNDB	id:	JVNDB-2017-001722	Trust: 0.8
db:	CNNVD	id:	CNNVD-201702-016	Trust: 0.7
db:	CNVD	id:	CNVD-2017-01167	Trust: 0.6
db:	VULHUB	id:	VHN-112021	Trust: 0.1

sources: CNVD: CNVD-2017-01167 // VULHUB: VHN-112021 // BID: 95939 // JVNDB: JVNDB-2017-001722 // CNNVD: CNNVD-201702-016 // NVD: CVE-2017-3818

REFERENCES

url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-20170201-esa1	Trust: 2.6
url:	http://www.securityfocus.com/bid/95939	Trust: 1.1
url:	http://www.securitytracker.com/id/1037773	Trust: 1.1
url:	http://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-3818	Trust: 0.8
url:	http://web.nvd.nist.gov/view/vuln/detail?vulnid=cve-2017-3818	Trust: 0.8
url:	http://www.cisco.com/	Trust: 0.3

sources: CNVD: CNVD-2017-01167 // VULHUB: VHN-112021 // BID: 95939 // JVNDB: JVNDB-2017-001722 // CNNVD: CNNVD-201702-016 // NVD: CVE-2017-3818

CREDITS

Cisco

Trust: 0.3

sources: BID: 95939

SOURCES

db:	CNVD	id:	CNVD-2017-01167
db:	VULHUB	id:	VHN-112021
db:	BID	id:	95939
db:	JVNDB	id:	JVNDB-2017-001722
db:	CNNVD	id:	CNNVD-201702-016
db:	NVD	id:	CVE-2017-3818

LAST UPDATE DATE

2025-04-20T23:26:13.399000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2017-01167	date:	2017-02-09T00:00:00
db:	VULHUB	id:	VHN-112021	date:	2017-07-25T00:00:00
db:	BID	id:	95939	date:	2017-02-02T00:09:00
db:	JVNDB	id:	JVNDB-2017-001722	date:	2017-03-15T00:00:00
db:	CNNVD	id:	CNNVD-201702-016	date:	2017-02-16T00:00:00
db:	NVD	id:	CVE-2017-3818	date:	2025-04-20T01:37:25.860

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2017-01167	date:	2017-02-09T00:00:00
db:	VULHUB	id:	VHN-112021	date:	2017-02-03T00:00:00
db:	BID	id:	95939	date:	2017-02-01T00:00:00
db:	JVNDB	id:	JVNDB-2017-001722	date:	2017-03-15T00:00:00
db:	CNNVD	id:	CNNVD-201702-016	date:	2017-02-04T00:00:00
db:	NVD	id:	CVE-2017-3818	date:	2017-02-03T07:59:00.810