CVE-2023-42805
quinn-proto Denial of Service vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
quinn-proto Denial of Service vulnerability
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.
- Record
CVE-2023-42805- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2023-2573
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.
- Record
EUVD-2023-2573- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q8wc-j5m9-27w3
Denial of Service issue in quinn-proto
Impact
Receiving unknown QUIC frames in a QUIC packet could result in a panic.
Patches
The problem has been fixed in 0.9.5 and 0.10.5 maintenance releases.
References
Fixed in https://github.com/quinn-rs/quinn/pull/1667, backported in https://github.com/quinn-rs/quinn/pull/1668 and https://github.com/quinn-rs/quinn/pull/1669.
- Record
GHSA-q8wc-j5m9-27w3- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-42805- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
quinn-proto Denial of Service vulnerability
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.
- Record
CVE-2023-42805- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2023-42805
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.
- Record
DEBIAN-CVE-2023-42805- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-q8wc-j5m9-27w3
Denial of Service issue in quinn-proto
Impact
Receiving unknown QUIC frames in a QUIC packet could result in a panic.
Patches
The problem has been fixed in 0.9.5 and 0.10.5 maintenance releases.
References
Fixed in https://github.com/quinn-rs/quinn/pull/1667, backported in https://github.com/quinn-rs/quinn/pull/1668 and https://github.com/quinn-rs/quinn/pull/1669.
- Record
GHSA-q8wc-j5m9-27w3- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVRUSTSEC-2023-0063
Denial of service in Quinn servers
Receiving QUIC frames containing a frame with unknown frame type could lead to a panic. Unfortunately this is issue was not found by our fuzzing infrastructure.
Thanks to the QUIC Tester research group for reporting this issue.
- Record
RUSTSEC-2023-0063- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-42805
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.
- Record
UBUNTU-CVE-2023-42805- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
quinn-protocrates.io |
before 0.9.5 | 0.9.5 |
rust-quinn-protoDebian:12 |
All versions, plus listed versions 0.10.2-10.10.5-10.10.5-20.10.6-10.11.13-1 Show 7 moreShow less0.11.14-10.11.16-10.11.19-10.11.9-10.11.9-20.11.9-30.9.2-2 |
None known |
rust-quinn-protoDebian:13 |
before 0.10.5-2 | 0.10.5-2 |
rust-quinn-protoDebian:14 |
before 0.10.5-2 | 0.10.5-2 |
quinn-protocrates.io |
0.0.0-0 up to 0.9.5, 0.10.0-0 up to 0.10.5 | 0.9.50.10.5 |
rust-quinn-protoUbuntu:24.04:LTS |
All versions, plus listed versions 0.10.2-10.10.5-20.10.6-1 |
None known |
rust-quinn-protoUbuntu:25.10 |
All versions, plus listed versions 0.10.6-10.11.9-1 |
None known |
rust-quinn-protoUbuntu:26.10 |
All versions, plus listed versions 0.11.9-30.11.14-10.11.16-1 |
None known |
rust-quinn-protoUbuntu:26.04:LTS |
All versions, plus listed versions 0.11.9-10.11.9-3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-42805 is a high vulnerability (CVSS 7.5) in Quinn-rs Quinn, published September 21, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.94%, the 61st percentile. Fixed in quinn-proto 0.9.5.
References
github.com/quinn-rs/quinn/security/advisories/GHSA-q8wc-j5m9-27w3
rustsec.org/advisories/RUSTSEC-2023-0063.html
nvd.nist.gov/vuln/detail/CVE-2023-42805