CVE-2023-42805

quinn-proto Denial of Service vulnerability

HIGH

7.5

CVSS Score

Published: September 21, 2023 at 04:39 PM UTC

Updated: June 17, 2026 at 06:24 AM UTC

2 products affected across 2 vendorsQuinnQuinn

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Severity

HIGH7.5

Exploit prediction

EPSS 0.9%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Quinn · Quinn Projectcargo

95%

v < 0.9.50.10.0 ≤ v < 0.10.50.10.0

Affected range stops below 0.10.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 0.9.5, so it looks safe — our inference, not a vendor statement

Quinn · Quinn Rs

60%

v < 0.10.5v < 0.9.5

Affected range stops below 0.10.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 0.9.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCIssue TrackingPatch

Source: [email protected]

https://github.com/quinn-rs/quinn/pull/1667

x_refsource_MISCIssue TrackingPatch

Source: [email protected]

https://github.com/quinn-rs/quinn/pull/1668

x_refsource_MISCIssue Tracking

Source: [email protected]

https://github.com/quinn-rs/quinn/pull/1669

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://github.com/quinn-rs/quinn/security/advisories/GHSA-q8wc-j5m9-27w3

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-20NVD-CWE-noinfo

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