CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
99.8%
Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication.
Vendor | Product | Version | CPE |
---|---|---|---|
ntp | ntp | * | cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p186:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p187:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p188:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p189:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p190:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p191:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p192:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p193:*:*:*:*:*:* |
ntp | ntp | 4.2.5 | cpe:2.3:a:ntp:ntp:4.2.5:p194:*:*:*:*:*:* |
support.ntp.org/bin/view/Main/NtpBug2941
www.debian.org/security/2015/dsa-3388
www.securityfocus.com/bid/77287
www.securitytracker.com/id/1033951
bugzilla.redhat.com/show_bug.cgi?id=1274265
cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839
security.gentoo.org/glsa/201604-03
security.gentoo.org/glsa/201607-15
security.netapp.com/advisory/ntap-20171004-0001/
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
99.8%