CVE-2017-6463 Denial of service in n/a
Remote authenticated users can crash the NTP daemon by sending an invalid configuration directive, requiring an upgrade to fix.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-6463?
CVE-2017-6463 is a medium-severity denial of service vulnerability in Ntp Ntp, published on 27 Mar 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote authenticated users to cause a denial of service (daemon crash) via an invalid setting in a :config directive, related to the unpeer option.
Weakness: CWE-20
Which versions are affected by CVE-2017-6463?
It affects 1 product.
Products include Ntp Ntp.
How do I fix CVE-2017-6463?
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-2017-6463 being exploited?
There is no known exploitation of CVE-2017-6463 in the wild and no public exploit code.
Other vulnerabilities in Ntp Ntp
Sources
Also known as DEBIAN-CVE-2017-6463, GHSA-gmrg-j497-5g5q, UBUNTU-CVE-2017-6463.