CVE-2023-49203 Denial of service in n/a

High 7.5 Published 18 Sep 2024 Updated 18 Sep 2024

Remote attackers can cause denial of service via bandwidth amplification using DNSBomb manipulation in Technitium DNS server.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-49203?

CVE-2023-49203 is a high-severity denial of service vulnerability in n/a, published on 18 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth amplification) because the DNSBomb manipulation causes accumulation of low-rate DNS queries such that there is a large-sized response in a burst of traffic.

Weakness: CWE-406

Which versions are affected by CVE-2023-49203?

It affects 1 product.

Products include Technitium Dnsserver.

How do I fix CVE-2023-49203?

No fix has been published for CVE-2023-49203 yet. Limit exposure of the affected software until one is available.

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-2023-49203 being exploited?

There is no known exploitation of CVE-2023-49203 in the wild and no public exploit code.

Sources

Also known as GHSA-qc32-xfvc-33fg.