Hash Collision Vulnerability in Kwik by NCC
CVE-2025-23020

5.3MEDIUM

Key Information:

Vendor
Ptrd
Status
Kwik
Vendor
CVE Published:
20 February 2025

Summary

A hash collision vulnerability exists in the Kwik application prior to version 0.10.1, allowing remote attackers to induce a significant CPU load on the server. By exploiting this flaw through malicious connections with colliding Source Connection IDs (SCIDs), attackers can execute a Hash Denial of Service (DoS) attack, potentially impacting server availability and performance.

Affected Version(s)

Kwik 0 < 0.10.1

References

https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory
https://github.com/ptrd/kwik/releases/tag/v0.10.1

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.