CVE-2016-4955
MEDIUM severity · CVSS 5.9 · CWE-362
5.9CVSS MEDIUM
Summary
ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers to cause a denial of service (peer-variable clearing and association outage) by sending (1) a spoofed crypto-NAK packet or (2) a packet with an incorrect MAC value at a certain time.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)9%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://bugs.ntp.org/3043Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
- 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
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html