CVE-2015-7855

The decodenetnum function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (assertion failure) via a 6 or mode 7 packet containing a long data value.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://support.ntp.org/bin/view/Main/NtpBug2922	Patch Vendor Advisory
http://www.debian.org/security/2015/dsa-3388	Third Party Advisory
http://www.securityfocus.com/bid/77283	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1033951	Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274264	Issue Tracking Third Party Advisory VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf	Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839	Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201607-15	Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/	Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11	Third Party Advisory US Government Resource
https://www.exploit-db.com/exploits/40840/	Exploit Third Party Advisory VDB Entry
http://support.ntp.org/bin/view/Main/NtpBug2922	Patch Vendor Advisory
http://www.debian.org/security/2015/dsa-3388	Third Party Advisory
http://www.securityfocus.com/bid/77283	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1033951	Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274264	Issue Tracking Third Party Advisory VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf	Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839	Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201607-15	Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/	Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11	Third Party Advisory US Government Resource
https://www.exploit-db.com/exploits/40840/	Exploit Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:ntp:ntp::::::::
	cpe:2.3:a:ntp:ntp::::::::
	cpe:2.3:a:ntp:ntp:4.2.8:-::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p2::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p3::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2::::::
	cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3::::::

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:7.0:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*

Configuration 3 (hide)

OR	cpe:2.3:a:netapp:oncommand_balance:-:::::::*
	cpe:2.3:a:netapp:oncommand_performance_manager:-:::::::*
	cpe:2.3:a:netapp:oncommand_unified_manager:-:::::clustered_data_ontap::
	cpe:2.3:o:netapp:clustered_data_ontap:-:::::::*
	cpe:2.3:o:netapp:data_ontap:-:::::7-mode::

Configuration 4 (hide)

AND

cpe:2.3:o:siemens:tim_4r-ie_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:tim_4r-ie:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:o:siemens:tim_4r-ie_dnp3_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:tim_4r-ie_dnp3:-:*:*:*:*:*:*:*

History

21 Nov 2024, 02:37

Type	Values Removed	Values Added
References	~~() http://support.ntp.org/bin/view/Main/NtpBug2922 - Patch, Vendor Advisory~~	() http://support.ntp.org/bin/view/Main/NtpBug2922 - Patch, Vendor Advisory
References	~~() http://www.debian.org/security/2015/dsa-3388 - Third Party Advisory~~	() http://www.debian.org/security/2015/dsa-3388 - Third Party Advisory
References	~~() http://www.securityfocus.com/bid/77283 - Third Party Advisory, VDB Entry~~	() http://www.securityfocus.com/bid/77283 - Third Party Advisory, VDB Entry
References	~~() http://www.securitytracker.com/id/1033951 - Third Party Advisory, VDB Entry~~	() http://www.securitytracker.com/id/1033951 - Third Party Advisory, VDB Entry
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=1274264 - Issue Tracking, Third Party Advisory, VDB Entry~~	() https://bugzilla.redhat.com/show_bug.cgi?id=1274264 - Issue Tracking, Third Party Advisory, VDB Entry
References	~~() https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf - Third Party Advisory~~	() https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf - Third Party Advisory
References	~~() https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839 - Third Party Advisory, VDB Entry~~	() https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839 - Third Party Advisory, VDB Entry
References	~~() https://security.gentoo.org/glsa/201607-15 - Third Party Advisory, VDB Entry~~	() https://security.gentoo.org/glsa/201607-15 - Third Party Advisory, VDB Entry
References	~~() https://security.netapp.com/advisory/ntap-20171004-0001/ - Third Party Advisory~~	() https://security.netapp.com/advisory/ntap-20171004-0001/ - Third Party Advisory
References	~~() https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 - Third Party Advisory, US Government Resource~~	() https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 - Third Party Advisory, US Government Resource
References	~~() https://www.exploit-db.com/exploits/40840/ - Exploit, Third Party Advisory, VDB Entry~~	() https://www.exploit-db.com/exploits/40840/ - Exploit, Third Party Advisory, VDB Entry

Information

Published : 2017-08-07 20:29

Updated : 2025-04-20 01:37

NVD link : CVE-2015-7855

Mitre link : CVE-2015-7855

CVE.ORG link : CVE-2015-7855

JSON object : View

Products Affected

debian

debian_linux

siemens

tim_4r-ie_firmware
tim_4r-ie_dnp3_firmware
tim_4r-ie
tim_4r-ie_dnp3

netapp

data_ontap
oncommand_unified_manager
oncommand_balance
oncommand_performance_manager
clustered_data_ontap

ntp

CWE

CWE-20

Improper Input Validation

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"confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2017-08-07T20:29:00.950", "references": [{"url": "http://support.ntp.org/bin/view/Main/NtpBug2922", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.debian.org/security/2015/dsa-3388", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/77283", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "http://www.securitytracker.com/id/1033951", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1274264", "tags": ["Issue Tracking", "Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://security.gentoo.org/glsa/201607-15", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://security.netapp.com/advisory/ntap-20171004-0001/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11", "tags": ["Third Party Advisory", "US Government Resource"], "source": "cve@mitre.org"}, {"url": "https://www.exploit-db.com/exploits/40840/", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "http://support.ntp.org/bin/view/Main/NtpBug2922", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.debian.org/security/2015/dsa-3388", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securityfocus.com/bid/77283", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securitytracker.com/id/1033951", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1274264", "tags": ["Issue Tracking", "Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://security.gentoo.org/glsa/201607-15", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://security.netapp.com/advisory/ntap-20171004-0001/", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11", "tags": ["Third Party Advisory", "US Government Resource"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.exploit-db.com/exploits/40840/", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "The decodenetnum function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (assertion failure) via a 6 or mode 7 packet containing a long data value."}, {"lang": "es", "value": "La funci\u00f3n decodenetnum en ntpd en NTP 4.2.x en versiones anteriores a 4.2.8p4, y 4.3.x en versiones anteriores a 4.3.77 permite que atacantes remotos provoquen una denegaci\u00f3n de servicio (fallo de aserci\u00f3n) empleando un paquete en modo 6 o modo 7 que contiene un valor de datos largo."}], "lastModified": "2025-04-20T01:37:25.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C240BAAB-8C12-4501-9DC6-FB877304E908", "versionEndExcluding": "4.2.8", "versionStartIncluding": "4.2.0"}, {"criteria": "cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79494F07-6081-497D-8A2D-B05486599EAE", "versionEndExcluding": "4.3.77", "versionStartIncluding": "4.3.0"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EEA51D83-5841-4335-AF07-7A43C118CAAE"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C855BBD2-2B38-4EFF-9DBE-CA61CCACD0DE"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "49ADE0C3-F75C-4EC0-8805-56013F0EB92C"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D8FF625A-EFA3-43D1-8698-4A37AE31A07C"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E3B99BBD-97FE-4615-905A-A614592226F8"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7A9AD3A-F030-4331-B52A-518BD963AB8A"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C293B8BE-6691-4944-BCD6-25EB98CABC73"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CEA650F8-2576-494A-A861-61572CA319D0"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4ED21EE8-7CBF-4BC5-BFC3-185D41296238"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C76A0B44-13DE-4173-8D05-DA54F6A71759"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1450241C-2F6D-4122-B33C-D78D065BA403"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "721AFD22-91D3-488E-A5E6-DD84C86E412B"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D6ADDB1-2E96-4FF6-AE95-4B06654D38B0"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "41E44E9F-6383-4E12-AEDC-B653FEA77A48"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "466D9A37-2658-4695-9429-0C6BF4A631C2"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "99774181-5F12-446C-AC2C-DB1C52295EED"}, {"criteria": "cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4427EE6D-3F79-4FF5-B3EC-EE6BD01562CE"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA"}, {"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}, {"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:netapp:oncommand_balance:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7DCBCC5D-C396-47A8-ADF4-D3A2C4377FB1"}, {"criteria": "cpe:2.3:a:netapp:oncommand_performance_manager:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "212E1878-1B9A-4CB4-A1CE-EAD60B867161"}, {"criteria": "cpe:2.3:a:netapp:oncommand_unified_manager:-:*:*:*:*:clustered_data_ontap:*:*", "vulnerable": true, "matchCriteriaId": "95B173E0-1475-4F8D-A982-86F36BE3DD4A"}, {"criteria": "cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1FED6CAE-D97F-49E0-9D00-1642A3A427B4"}, {"criteria": "cpe:2.3:o:netapp:data_ontap:-:*:*:*:*:7-mode:*:*", "vulnerable": true, "matchCriteriaId": "392A1364-2739-450D-9E19-DFF93081C2C6"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:siemens:tim_4r-ie_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0730ED6-676B-4200-BC07-C0B4531B242C"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:siemens:tim_4r-ie:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "0B87B16C-9E9F-448B-9255-B2BB2B8CAD63"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:siemens:tim_4r-ie_dnp3_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E16E82E3-9A85-41A4-8A33-12AE45A1B584"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:siemens:tim_4r-ie_dnp3:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EE27728D-D37B-43FC-BA8A-0E930DDBD10B"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}

6.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

JSON object

Attach tags to CVE-2015-7855

6.5^/10

4.0^/10

Attach tags to `CVE-2015-7855`