CVE-2016-4957

ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://bugs.ntp.org/3046	Issue Tracking Vendor Advisory
http://www.kb.cert.org/vuls/id/321640	Third Party Advisory US Government Resource
http://support.ntp.org/bin/view/Main/NtpBug3046	Patch Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice	Release Notes Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html	Mailing List Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html	Third Party Advisory
https://security.gentoo.org/glsa/201607-15	Third Party Advisory
http://www.securitytracker.com/id/1036037	Third Party Advisory VDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:ntp:ntp:4.2.8:p7::::::
	cpe:2.3:a:ntp:ntp:4.3.92:::::::*

Configuration 2 (hide)

OR	cpe:2.3:o:oracle:solaris:10:::::::*
	cpe:2.3:o:oracle:solaris:11.3:::::::*

Configuration 3 (hide)

OR	cpe:2.3:a:suse:manager_proxy:2.1:::::::*
	cpe:2.3:a:suse:openstack_cloud:5:::::::*
	cpe:2.3:o:novell:suse_manager:2.1:::::::*
	cpe:2.3:o:opensuse:leap:42.1:::::::*
	cpe:2.3:o:opensuse:opensuse:13.2:::::::*
	cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1::::::
	cpe:2.3:o:suse:linux_enterprise_server:11:sp2:::ltss:::*
	cpe:2.3:o:suse:linux_enterprise_server:11:sp3:::ltss:::*
	cpe:2.3:o:suse:linux_enterprise_server:11:sp4::::::
	cpe:2.3:o:suse:linux_enterprise_server:12:sp1::::::

Information

Published : 2016-07-04 18:59

Updated : 2020-06-18 11:07

NVD link : CVE-2016-4957

Mitre link : CVE-2016-4957

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

Products Affected

suse

linux_enterprise_desktop
openstack_cloud
manager_proxy
linux_enterprise_server

ntp

opensuse

leap
opensuse

novell

suse_manager

oracle

solaris

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://bugs.ntp.org/3046", "name": "http://bugs.ntp.org/3046", "tags": ["Issue Tracking", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://www.kb.cert.org/vuls/id/321640", "name": "VU#321640", "tags": ["Third Party Advisory", "US Government Resource"], "refsource": "CERT-VN"}, {"url": "http://support.ntp.org/bin/view/Main/NtpBug3046", "name": "http://support.ntp.org/bin/view/Main/NtpBug3046", "tags": ["Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://support.ntp.org/bin/view/Main/SecurityNotice", "name": "http://support.ntp.org/bin/view/Main/SecurityNotice", "tags": ["Release Notes", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html", "name": "openSUSE-SU-2016:1583", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html", "name": "SUSE-SU-2016:1563", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html", "name": "SUSE-SU-2016:1584", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html", "name": "SUSE-SU-2016:1602", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html", "name": "openSUSE-SU-2016:1636", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "SUSE"}, {"url": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html", "name": "http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://security.gentoo.org/glsa/201607-15", "name": "GLSA-201607-15", "tags": ["Third Party Advisory"], "refsource": "GENTOO"}, {"url": "http://www.securitytracker.com/id/1036037", "name": "1036037", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "SECTRACK"}, {"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc", "name": "FreeBSD-SA-16:24", "tags": ["Third Party Advisory"], "refsource": "FREEBSD"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-476"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2016-4957", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}}, "publishedDate": "2016-07-05T01:59Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:ntp:ntp:4.3.92:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:suse:manager_proxy:2.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:suse:openstack_cloud:5:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:novell:suse_manager:2.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:ltss:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-06-18T18:07Z"}

7.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

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