CVE-2025-4432: DoS (CVSS 5.3)

Description

A flaw was found in Rust's Ring package. A panic may be triggered when overflow checking is enabled. In the QUIC protocol, this flaw allows an attacker to induce this panic by sending a specially crafted packet. It will likely occur unintentionally in 1 out of every 2**32 packets sent or received.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-770 CWE-770

References

Other References

https://access.redhat.com/security/cve/CVE-2025-4432 https://bugzilla.redhat.com/show_bug.cgi?id=2350655 https://github.com/briansmith/ring https://github.com/briansmith/ring/blob/main/RELEASES.md#version-01712-2025-03-05 https://github.com/briansmith/ring/commit/ec2d3cf1d91f148c84e4806b4f0b3c98f6df3b38 https://github.com/briansmith/ring/pull/2447 https://rustsec.org/advisories/RUSTSEC-2025-0009.html

Frequently Asked Questions

What is CVE-2025-4432? +

A flaw was found in Rust's Ring package. A panic may be triggered when overflow checking is enabled. In the QUIC protocol, this flaw allows an attacker to induce this panic by sending a specially crafted packet. It will likely occur unintentionally in 1 out of every 2**32 packets sent or received. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-4432? +

CVE-2025-4432 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2025-4432? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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