CVE-2023-42805 — quinn-proto is a state machine for the QUIC transport protocol

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.

01What is this 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.

02Affected products

Vendor	Product	Versions
quinn-rs	quinn	< 0.9.5, >= 0.10.0, < 0.10.5

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-09-21T16:39:56.350Z
• Last modified: 2024-09-24T15:03:39.325Z

09References

• github.com — https://github.com/quinn-rs/quinn/security/advisories/GHSA-q8wc-j5m9-27w3
• github.com — https://github.com/quinn-rs/quinn/pull/1667
• github.com — https://github.com/quinn-rs/quinn/pull/1668
• github.com — https://github.com/quinn-rs/quinn/pull/1669