CVE-2022-37428 Denial of service in n/a
Attackers can crash the PowerDNS Recursor daemon via crafted DNS queries when protobuf logging is enabled, causing service disruption.
- 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-2022-37428?
CVE-2022-37428 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 23 Aug 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
PowerDNS Recursor up to and including 4.5.9, 4.6.2 and 4.7.1, when protobuf logging is enabled, has Improper Cleanup upon a Thrown Exception, leading to a denial of service (daemon crash) via a DNS query that leads to an answer with specific properties.
Weakness: CWE-459
Which versions are affected by CVE-2022-37428?
It affects 2 products.
Linux distribution packages (3)
pdns-recursor SUSE:Package Hub 15 SP4 | All versions | 4.6.3-bp154.2.3.1 |
pdns-recursor openSUSE:Leap 15.4 | All versions | 4.6.3-bp154.2.3.1 |
pdns-recursor openSUSE:Tumbleweed | All versions | 4.7.2-1.1 |
Products include Fedoraproject Fedora, Powerdns Recursor.
How do I fix CVE-2022-37428?
Apply the vendor's patch.
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-2022-37428 being exploited?
There is no known exploitation of CVE-2022-37428 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2022-37428, GHSA-w3r7-9rrf-88pm, UBUNTU-CVE-2022-37428, openSUSE-SU-2022:10171-1, openSUSE-SU-2024:12281-1.