CVE-2024-45396 Quicly assertion failures

High 7.5 Published Updated

A remote attacker can trigger assertion failures in the Quicly library, causing a denial of service by crashing the application.

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-2024-45396?

CVE-2024-45396 is a high-severity denial of service vulnerability in h2o quicly, published on 11 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Quicly is an IETF QUIC protocol implementation. Quicly up to commtit d720707 is susceptible to a denial-of-service attack. A remote attacker can exploit these bugs to trigger an assertion failure that crashes process using quicly. The vulnerability is addressed with commit 2a95896104901589c495bc41460262e64ffcad5c.

Weakness: CWE-617

Which versions are affected by CVE-2024-45396?

It affects 1 product.

Products include Dena Quicly.

How do I fix CVE-2024-45396?

No fix has been published for CVE-2024-45396 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-2024-45396 being exploited?

There is no known exploitation of CVE-2024-45396 in the wild and no public exploit code.

Sources

Also known as GHSA-mp3c-h5gg-mm6p.

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