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GHSA-w4cc-pc2h-whcj

HIGH

GHSA-w4cc-pc2h-whcj is a high-severity (CVSS 7.5) Out-of-bounds Write vulnerability in derive-com-impl. O3 Security confirms whether GHSA-w4cc-pc2h-whcj is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Out-of-bounds Write in derive-com-impl

Also known asCVE-2021-45681GHSA-9rg7-3j4f-cf4xRUSTSEC-2021-0083
Published
Jan 6, 2022
Updated
Nov 8, 2023
Affected
1 pkg
Patched
None yet
Exploits
None indexed

Real-World Exposure

1 pkg affected
🦀derive-com-impl

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

An issue was discovered in the derive-com-impl crate before 0.1.2 for Rust. An invalid reference (and memory corruption) can occur because AddRef might not be called before returning a pointer.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🦀crates.ioderive-com-implall versionsNo fix

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for derive-com-impl. 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. Remediation status

    No patched version of derive-com-impl has shipped for GHSA-w4cc-pc2h-whcj yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. 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.

  4. How O3 protects you

    O3 pinpoints whether GHSA-w4cc-pc2h-whcj 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-w4cc-pc2h-whcj. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

An issue was discovered in the derive-com-impl crate before 0.1.2 for Rust. An invalid reference (and memory corruption) can occur because AddRef might not be called before returning a pointer.
O3 Security · Impact-Aware SCA

Is GHSA-w4cc-pc2h-whcj in your dependencies?

O3 detects GHSA-w4cc-pc2h-whcj 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.