CVE-2018-10851 Denial of service in pdns
Remote attackers can cause denial of service in PowerDNS servers by sending malformed records that trigger memory leaks.
- 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-2018-10851?
CVE-2018-10851 is a medium-severity denial of service vulnerability in Powerdns Recursor, published on 29 Nov 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
PowerDNS Authoritative Server 3.3.0 up to 4.1.4 excluding 4.1.5 and 4.0.6, and PowerDNS Recursor 3.2 up to 4.1.4 excluding 4.1.5 and 4.0.9, are vulnerable to a memory leak while parsing malformed records that can lead to remote denial of service.
Which versions are affected by CVE-2018-10851?
It affects 2 products.
Products include Powerdns Authoritative, Powerdns Recursor.
How do I fix CVE-2018-10851?
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-2018-10851 being exploited?
There is no known exploitation of CVE-2018-10851 in the wild and no public exploit code.
Other vulnerabilities in Powerdns Recursor
Sources
Also known as DEBIAN-CVE-2018-10851, GHSA-v52v-2q9p-gp4x, UBUNTU-CVE-2018-10851.