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Fencer Vulns
high 7.5

CVE-2023-42805 json

quinn-proto Denial of Service vulnerability

published 2023-09-21 3 y ago modified 2026-09-10 1 mo ago also GHSA-q8wc-j5m9-27w3 , RUSTSEC-2023-0063 , EUVD-2023-2573

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

quinn-proto is a state machine for the QUIC transport protocol. Prior to versions 0.9.5 and 0.10.5, receiving unknown QUIC frames in a QUIC packet could result in a panic. The problem has been fixed in 0.9.5 and 0.10.5 maintenance releases.

Patch / fix

  • crates.io quinn-proto 0.9.5, 0.10.5
  • quinn_project quinn 0.9.5, 0.10.5
  • rust-quinn-proto Debian 14, Debian 13 0.10.5-2

debian advisories DEBIAN-CVE-2023-42805

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
crates.io quinn-proto
<0.9.5
>=0.0.0-0, <0.9.5
>=0.10.0-0, <0.10.5
0.9.5
0.10.5

Affected products

  • quinn-rs quinn
  • quinn_project quinn

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.