GHSA-37xq-q42p-rv3p is a low-severity (CVSS 2.6) vulnerability in ntpd. A fix is available for ntpd — see the affected versions and patch details below.
ntpd has Dependency on Vulnerable Third-Party Component
Real-World Exposure
ntpdReal-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
During startup, an attacker that can man-in-the-middle traffic to and from NTS key exchange servers can trigger a very expensive key validation process due to a vulnerability in webpki.
Impact
This vulnerability can lead to excessive cpu usage on startup on clients configured to use NTS
Patches
Affected users are recommended to upgrade to version 0.3.7
References
See also https://github.com/rustsec/advisory-db/blob/main/crates/rustls-webpki/RUSTSEC-2023-0053.md
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | ntpd | all versions | 0.3.7cargo update -p ntpd --precise 0.3.7 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ntpd, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ntpd to 0.3.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-37xq-q42p-rv3p is resolved across your whole dependency graph.
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-37xq-q42p-rv3p can be triaged on real exposure rather than presence alone.
Tailored to GHSA-37xq-q42p-rv3p. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-37xq-q42p-rv3p in your dependencies?
O3 Security finds GHSA-37xq-q42p-rv3p across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.