CVE-2016-4955

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.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html
• http://www.ubuntu.com/usn/USN-3096-1
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNWGCQLW2VY72NIUYMJOCAKJKTXHDUK2/
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
• https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc
• http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORAMN3Q7TVJ54MBYF75XCJOE3DP7LYHT/
• http://www.securityfocus.com/bid/91007
• http://support.ntp.org/bin/view/Main/NtpBug3043
• http://www.securitytracker.com/id/1036037
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html
• http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
• http://bugs.ntp.org/3043
• http://www.kb.cert.org/vuls/id/321640
• http://support.ntp.org/bin/view/Main/SecurityNotice
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3EYJQHJZ2KTVQ7ICEFHXTLZ36MRASWX/
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
• https://security.gentoo.org/glsa/201607-15
• http://packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.html
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd
• http://packetstormsecurity.com/files/137322/FreeBSD-Security-Advisory-FreeBSD-SA-16-24.ntp.html
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
• http://www.securityfocus.com/archive/1/538599/100/0/threaded
• http://www.securityfocus.com/archive/1/538600/100/0/threaded
• https://www.kb.cert.org/vuls/id/321640
• http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded
• http://www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded
• https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
• https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11

References

• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html
• http://www.ubuntu.com/usn/USN-3096-1
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNWGCQLW2VY72NIUYMJOCAKJKTXHDUK2/
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
• https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc
• http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORAMN3Q7TVJ54MBYF75XCJOE3DP7LYHT/
• http://www.securityfocus.com/bid/91007
• http://support.ntp.org/bin/view/Main/NtpBug3043
• http://www.securitytracker.com/id/1036037
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html
• http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
• http://bugs.ntp.org/3043
• http://www.kb.cert.org/vuls/id/321640
• http://support.ntp.org/bin/view/Main/SecurityNotice
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3EYJQHJZ2KTVQ7ICEFHXTLZ36MRASWX/
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
• https://security.gentoo.org/glsa/201607-15
• http://packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.html
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd
• http://packetstormsecurity.com/files/137322/FreeBSD-Security-Advisory-FreeBSD-SA-16-24.ntp.html
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
• http://www.securityfocus.com/archive/1/538599/100/0/threaded
• http://www.securityfocus.com/archive/1/538600/100/0/threaded
• https://www.kb.cert.org/vuls/id/321640
• http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded
• http://www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded
• https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
• https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11

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