CVE-2016-1548

Description

An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched.

References

http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183647.html

http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184669.html

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html

http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html

http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html

http://packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.html

http://rhn.redhat.com/errata/RHSA-2016-1552.html

https://access.redhat.com/errata/RHSA-2016:1141

https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc

https://security.gentoo.org/glsa/201607-15

https://security.netapp.com/advisory/ntap-20171004-0002/

https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11

https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11

https://www.debian.org/security/2016/dsa-3629

https://www.kb.cert.org/vuls/id/718152

https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0082

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160428-ntpd

http://www.debian.org/security/2016/dsa-3629

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

http://www.securitytracker.com/id/1035705

http://www.talosintelligence.com/reports/TALOS-2016-0082/

http://www.ubuntu.com/usn/USN-3096-1

Details

Risk Information

CVSS v2

CVSS v3