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ID

VAR-201707-0593


CVE

CVE-2017-11104


TITLE

Knot DNS of TSIG In the implementation of the protocol TSIG Vulnerability that bypasses authentication

Trust: 0.8

sources: JVNDB: JVNDB-2017-005615

DESCRIPTION

Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check. Knot DNS is prone to a authentication-bypass vulnerability. An attacker can exploit this issue to bypass authentication mechanism and perform unauthorized actions. This may lead to further attacks

Trust: 1.98

sources: NVD: CVE-2017-11104 // JVNDB: JVNDB-2017-005615 // BID: 99598 // VULMON: CVE-2017-11104

AFFECTED PRODUCTS

vendor:knot dnsmodel:knot dnsscope:eqversion:2.5.0

Trust: 1.6

vendor:knot dnsmodel:knot dnsscope:eqversion:2.5.1

Trust: 1.6

vendor:knot dnsmodel:knot dnsscope:lteversion:2.4.4

Trust: 1.0

vendor:debianmodel:linuxscope:eqversion:9.0

Trust: 1.0

vendor:debianmodel:linuxscope:eqversion:10.0

Trust: 1.0

vendor:debianmodel:linuxscope:eqversion:8.0

Trust: 1.0

vendor:cz nicmodel:knot dnsscope:eqversion:2.5.2

Trust: 0.8

vendor:cz nicmodel:knot dnsscope:ltversion:2.5.x

Trust: 0.8

vendor:knot dnsmodel:knot dnsscope:eqversion:2.4.4

Trust: 0.6

vendor:knotmodel:dns knot dnsscope:eqversion:2.5.1

Trust: 0.3

vendor:knotmodel:dns knot dnsscope:eqversion:2.4.4

Trust: 0.3

vendor:knotmodel:dns knot dnsscope:eqversion:2.4.1

Trust: 0.3

vendor:knotmodel:dns knot dnsscope:neversion:2.5.2

Trust: 0.3

vendor:knotmodel:dns knot dnsscope:neversion:2.4.5

Trust: 0.3

sources: BID: 99598 // JVNDB: JVNDB-2017-005615 // CNNVD: CNNVD-201707-321 // NVD: CVE-2017-11104

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2017-11104
value: MEDIUM

Trust: 1.0

NVD: CVE-2017-11104
value: MEDIUM

Trust: 0.8

CNNVD: CNNVD-201707-321
value: MEDIUM

Trust: 0.6

VULMON: CVE-2017-11104
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2017-11104
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: 1.9

nvd@nist.gov: CVE-2017-11104
baseSeverity: MEDIUM
baseScore: 5.9
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: HIGH
availabilityImpact: NONE
exploitabilityScore: 2.2
impactScore: 3.6
version: 3.1

Trust: 1.0

NVD: CVE-2017-11104
baseSeverity: MEDIUM
baseScore: 5.9
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: HIGH
availabilityImpact: NONE
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULMON: CVE-2017-11104 // JVNDB: JVNDB-2017-005615 // CNNVD: CNNVD-201707-321 // NVD: CVE-2017-11104

PROBLEMTYPE DATA

problemtype:CWE-20

Trust: 1.0

problemtype:CWE-284

Trust: 0.8

sources: JVNDB: JVNDB-2017-005615 // NVD: CVE-2017-11104

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-201707-321

TYPE

input validation error

Trust: 0.6

sources: CNNVD: CNNVD-201707-321

CONFIGURATIONS

sources:
            
            
            JVNDB: JVNDB-2017-005615

PATCH
title:Knot DNS 2.5.2 and 2.4.5 releasesurl:https://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.html
Trust: 0.8
title:Knot DNS Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=71558
Trust: 0.6
title:Debian CVElist Bug Report Logs: knot: CVE-2017-11104: Improper TSIG validity period check can allow TSIG forgeryurl:https://vulmon.com/vendoradvisory?qidtp=debian_cvelist_bugreportlogs&qid=b5441c716b243641f2c493f98bbc0fd3
Trust: 0.1
title:CVE-2017-3143url:https://github.com/saaph/CVE-2017-3143 
Trust: 0.1
title:awesome-starsurl:https://github.com/gladiopeace/awesome-stars 
Trust: 0.1
sources:
            
            
            VULMON: CVE-2017-11104 // 
            
            
            
            JVNDB: JVNDB-2017-005615 // 
            
            
            
            CNNVD: CNNVD-201707-321

EXTERNAL IDS
db:NVDid:CVE-2017-11104
Trust: 2.8
db:BIDid:99598
Trust: 2.0
db:JVNDBid:JVNDB-2017-005615
Trust: 0.8
db:CNNVDid:CNNVD-201707-321
Trust: 0.6
db:VULMONid:CVE-2017-11104
Trust: 0.1
sources:
            
            
            VULMON: CVE-2017-11104 // 
            
            
            
            BID: 99598 // 
            
            
            
            JVNDB: JVNDB-2017-005615 // 
            
            
            
            CNNVD: CNNVD-201707-321 // 
            
            
            
            NVD: CVE-2017-11104

REFERENCES
url:https://lists.nic.cz/pipermail/knot-dns-users/2017-june/001144.html
Trust: 2.0
url:http://www.synacktiv.ninja/ressources/knot_dns_tsig_signature_forgery.pdf
Trust: 2.0
url:http://www.securityfocus.com/bid/99598
Trust: 1.8
url:https://bugs.debian.org/865678
Trust: 1.7
url:http://www.debian.org/security/2017/dsa-3910
Trust: 1.7
url:http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00078.html
Trust: 1.7
url:http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00076.html
Trust: 1.7
url:http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00089.html
Trust: 1.7
url:http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00049.html
Trust: 1.7
url:http://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-11104
Trust: 0.8
url:https://nvd.nist.gov/vuln/detail/cve-2017-11104
Trust: 0.8
url:https://www.knot-dns.cz/
Trust: 0.3
url:https://cwe.mitre.org/data/definitions/20.html
Trust: 0.1
url:https://nvd.nist.gov
Trust: 0.1
url:https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=865678
Trust: 0.1
url:https://github.com/saaph/cve-2017-3143
Trust: 0.1
sources:
            
            
            VULMON: CVE-2017-11104 // 
            
            
            
            BID: 99598 // 
            
            
            
            JVNDB: JVNDB-2017-005615 // 
            
            
            
            CNNVD: CNNVD-201707-321 // 
            
            
            
            NVD: CVE-2017-11104

CREDITS
Synactiv
Trust: 0.3
sources:
            
            
            BID: 99598

SOURCES
db:VULMONid:CVE-2017-11104
db:BIDid:99598
db:JVNDBid:JVNDB-2017-005615
db:CNNVDid:CNNVD-201707-321
db:NVDid:CVE-2017-11104

LAST UPDATE DATE
2025-04-20T23:32:11.299000+00:00

SOURCES UPDATE DATE
db:VULMONid:CVE-2017-11104date:2020-09-18T00:00:00
db:BIDid:99598date:2017-07-14T00:00:00
db:JVNDBid:JVNDB-2017-005615date:2017-08-02T00:00:00
db:CNNVDid:CNNVD-201707-321date:2020-10-22T00:00:00
db:NVDid:CVE-2017-11104date:2025-04-20T01:37:25.860

SOURCES RELEASE DATE
db:VULMONid:CVE-2017-11104date:2017-07-08T00:00:00
db:BIDid:99598date:2017-07-14T00:00:00
db:JVNDBid:JVNDB-2017-005615date:2017-08-02T00:00:00
db:CNNVDid:CNNVD-201707-321date:2017-07-10T00:00:00
db:NVDid:CVE-2017-11104date:2017-07-08T10:29:00.170