CVE-2016-4957
HIGH severity · CVSS 7.5 · CWE-476
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)45%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://support.ntp.org/bin/view/Main/NtpBug3046 ↗
Additional information
- NVD record
- http://support.ntp.org/bin/view/Main/NtpBug3046Patch
- http://bugs.ntp.org/3046Advisory
- http://support.ntp.org/bin/view/Main/SecurityNoticeAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.htmlAdvisory