Description
An off-path attacker can cause a preemptible client association to be demobilized in NTP 4.2.8p4 and earlier and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 by sending a crypto NAK packet to a victim client with a spoofed source address of an existing associated peer. This is true even if authentication is enabled.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
NTP Project NTP
4.2.8p3affected4.2.8p4affected
NTPsec Project NTPSec
a5fb34b9cc89b92a8fef2f459004865c93bb7f92affected
References
- http://www.securityfocus.com/bid/88276 ↗
- http://www.debian.org/security/2016/dsa-3629 ↗
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html ↗
- https://access.redhat.com/errata/RHSA-2016:1141 ↗
- http://rhn.redhat.com/errata/RHSA-2016-1552.html ↗
- http://www.securitytracker.com/id/1035705 ↗
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html ↗
- https://security.netapp.com/advisory/ntap-20171004-0002/ ↗
- http://www.talosintelligence.com/reports/TALOS-2016-0081/ ↗
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:16.ntp.asc ↗
- https://security.gentoo.org/glsa/201607-15 ↗
- https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf ↗
- https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 ↗
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf ↗
- https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19 ↗