CVE-2018-14626 Denial of service in pdns
Attackers can cause denial of service in PowerDNS Authoritative Server and Recursor by polluting the packet cache with crafted queries.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-14626?
CVE-2018-14626 is a medium-severity denial of service vulnerability in Powerdns Recursor, published on 29 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
PowerDNS Authoritative Server 4.1.0 up to 4.1.4 inclusive and PowerDNS Recursor 4.0.0 up to 4.1.4 inclusive are vulnerable to a packet cache pollution via crafted query that can lead to denial of service.
Weakness: CWE-400
Which versions are affected by CVE-2018-14626?
It affects 2 products.
Products include Powerdns Authoritative, Powerdns Recursor.
How do I fix CVE-2018-14626?
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-2018-14626 being exploited?
There is no known exploitation of CVE-2018-14626 in the wild and no public exploit code.
Other vulnerabilities in Powerdns Recursor
Sources
Also known as DEBIAN-CVE-2018-14626, GHSA-pvqq-mpxw-8x79, UBUNTU-CVE-2018-14626.