A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and previous versions and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
ntp ntp 4.2.8 |
What's the time? It's time to get ill. Unless you fix these beastly flaws
Cisco has turned over a bunch of Network Time Protocol daemon (ntpd) vulnerabilities to the Linux Foundation's Core Infrastructure Initiative. The vulnerabilities, discovered during its ongoing ntpd evaluation, “allow attackers to craft UDP packets to either cause a denial of service condition or to prevent the correct time being set”, Cisco's Talos Security Intelligence and Research Group writes here. First on the list is CVE-2016-1550, described as an NTP authentication potential timing vu...
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