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Not in CISA KEV
HIGH severity

GHSA-q8wc-j5m9-27w3

HIGHFix: quinn-rs/quinn#1667

GHSA-q8wc-j5m9-27w3 is a high-severity (CVSS 7.5) Improper Input Validation vulnerability in quinn-proto. O3 Security confirms whether GHSA-q8wc-j5m9-27w3 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Denial of Service issue in quinn-proto

Also known asCVE-2023-42805RUSTSEC-2023-0063
Published
Sep 21, 2023
Updated
Feb 12, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Feb 12, 2024 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🦀quinn-proto

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.ioquinn-protoall versions0.9.5

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for quinn-proto. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update quinn-proto to 0.9.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q8wc-j5m9-27w3 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-q8wc-j5m9-27w3 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-q8wc-j5m9-27w3. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### 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.
O3 Security · Impact-Aware SCA

Is GHSA-q8wc-j5m9-27w3 in your dependencies?

O3 detects GHSA-q8wc-j5m9-27w3 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-q8wc-j5m9-27w3: Denial of Service… | O3 Security