GHSA-fq33-vmhv-48xh
ntru-rs has unsound FFI: Wrong API usage causes write past allocated area
Blast Radius
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Description
The following usage causes undefined behavior.
let kp: ntru::types::KeyPair = …;
kp.get_public().export(Default::default())
When compiled with debug assertions, the code above will trigger a attempt to subtract with overflow panic before UB occurs.
Other mistakes (e.g. using EncParams from a different key) may always trigger UB.
Likely, older versions of this crate are also affected, but have not been tested.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | ntru | ≥ 0.4.3 | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ntru. 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.
Remediation status
No patched version of ntru has shipped for GHSA-fq33-vmhv-48xh yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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 pinpoints whether GHSA-fq33-vmhv-48xh 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-fq33-vmhv-48xh. 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-fq33-vmhv-48xh in your dependencies?
O3 detects GHSA-fq33-vmhv-48xh 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.