CVE-2016-7427 Denial of service in n/a
Remote attackers can cause denial of service in NTP broadcast mode by sending crafted packets, affecting systems using this specific configuration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7427?
CVE-2016-7427 is a medium-severity denial of service vulnerability in Ntp Ntp, published on 13 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The broadcast mode replay prevention functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via a crafted broadcast mode packet.
Weakness: CWE-400
Which versions are affected by CVE-2016-7427?
It affects 1 product.
Products include Ntp Ntp.
How do I fix CVE-2016-7427?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-7427 being exploited?
There is no known exploitation of CVE-2016-7427 in the wild and no public exploit code.
Other vulnerabilities in Ntp Ntp
Sources
Also known as DEBIAN-CVE-2016-7427, GHSA-mr7q-6qv6-frx4, UBUNTU-CVE-2016-7427.