Details of VAR-201811-0179

ID

VAR-201811-0179

CVE

CVE-2018-15443

TITLE

Cisco Firepower System Software depletion vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2018-014054

DESCRIPTION

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured Intrusion Prevention System (IPS) rule that inspects certain types of TCP traffic. The vulnerability is due to incorrect TCP retransmission handling. An attacker could exploit this vulnerability by sending a crafted TCP connection request through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network. Cisco Firepower System The software is vulnerable to resource exhaustion.Information may be tampered with. Remote attackers 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 IDs CSCvk76547

Trust: 1.98

sources: NVD: CVE-2018-15443 // JVNDB: JVNDB-2018-014054 // BID: 105870 // VULHUB: VHN-125703

AFFECTED PRODUCTS

vendor:	cisco	model:	firepower system software	scope:	eq	version:	-	Trust: 1.0
vendor:	cisco	model:	firepower system software	scope:	-	version:	-	Trust: 0.8
vendor:	cisco	model:	firepower system software	scope:	eq	version:	0	Trust: 0.3

sources: BID: 105870 // JVNDB: JVNDB-2018-014054 // NVD: CVE-2018-15443

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-15443
value:	HIGH
Trust: 1.0
ykramarz@cisco.com:	CVE-2018-15443
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2018-15443
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-201811-190
value:	HIGH
Trust: 0.6
VULHUB:	VHN-125703
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-15443
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
VULHUB:	VHN-125703
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-2018-15443
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	HIGH
availabilityImpact:	NONE
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.0
Trust: 1.8
ykramarz@cisco.com:	CVE-2018-15443
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: 1.0

sources: VULHUB: VHN-125703 // JVNDB: JVNDB-2018-014054 // CNNVD: CNNVD-201811-190 // NVD: CVE-2018-15443 // NVD: CVE-2018-15443

PROBLEMTYPE DATA

problemtype:

CWE-400

Trust: 1.9

sources: VULHUB: VHN-125703 // JVNDB: JVNDB-2018-014054 // NVD: CVE-2018-15443

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-201811-190

TYPE

resource management error

Trust: 0.6

sources: CNNVD: CNNVD-201811-190

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-014054

PATCH

title:	cisco-sa-20181107-fde-tcp-bypass	url:	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181107-fde-tcp-bypass	Trust: 0.8
title:	Cisco Firepower System Software Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=86661	Trust: 0.6

sources: JVNDB: JVNDB-2018-014054 // CNNVD: CNNVD-201811-190

EXTERNAL IDS

db:	NVD	id:	CVE-2018-15443	Trust: 2.8
db:	BID	id:	105870	Trust: 2.0
db:	JVNDB	id:	JVNDB-2018-014054	Trust: 0.8
db:	CNNVD	id:	CNNVD-201811-190	Trust: 0.7
db:	VULHUB	id:	VHN-125703	Trust: 0.1

sources: VULHUB: VHN-125703 // BID: 105870 // JVNDB: JVNDB-2018-014054 // CNNVD: CNNVD-201811-190 // NVD: CVE-2018-15443

REFERENCES

url:	https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-20181107-fde-tcp-bypass	Trust: 2.0
url:	http://www.securityfocus.com/bid/105870	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-15443	Trust: 0.8
url:	https://nvd.nist.gov/vuln/detail/cve-2018-15443	Trust: 0.8
url:	http://www.cisco.com/	Trust: 0.3

sources: VULHUB: VHN-125703 // BID: 105870 // JVNDB: JVNDB-2018-014054 // CNNVD: CNNVD-201811-190 // NVD: CVE-2018-15443

CREDITS

This vulnerability was found during the resolution of a Cisco TAC support case.

Trust: 0.6

sources: CNNVD: CNNVD-201811-190

SOURCES

db:	VULHUB	id:	VHN-125703
db:	BID	id:	105870
db:	JVNDB	id:	JVNDB-2018-014054
db:	CNNVD	id:	CNNVD-201811-190
db:	NVD	id:	CVE-2018-15443

LAST UPDATE DATE

2024-08-14T13:27:18.775000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-125703	date:	2019-10-09T00:00:00
db:	BID	id:	105870	date:	2018-11-07T00:00:00
db:	JVNDB	id:	JVNDB-2018-014054	date:	2019-03-11T00:00:00
db:	CNNVD	id:	CNNVD-201811-190	date:	2019-10-17T00:00:00
db:	NVD	id:	CVE-2018-15443	date:	2019-10-09T23:35:38.423

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-125703	date:	2018-11-08T00:00:00
db:	BID	id:	105870	date:	2018-11-07T00:00:00
db:	JVNDB	id:	JVNDB-2018-014054	date:	2019-03-11T00:00:00
db:	CNNVD	id:	CNNVD-201811-190	date:	2018-11-08T00:00:00
db:	NVD	id:	CVE-2018-15443	date:	2018-11-08T17:29:00.653