CVE-2022-37428 Denial of service in n/a

Medium 6.5 Published Updated

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 SP4All versions4.6.3-bp154.2.3.1
pdns-recursor openSUSE:Leap 15.4All versions4.6.3-bp154.2.3.1
pdns-recursor openSUSE:TumbleweedAll versions4.7.2-1.1

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.

All Fedoraproject Fedora vulnerabilities

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.

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