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Not in CISA KEV
HIGH severity

GHSA-2969-8hh9-57jc

HIGH

GHSA-2969-8hh9-57jc is a high-severity (CVSS 7.5) CWE-770 vulnerability in ckb. O3 Security confirms whether GHSA-2969-8hh9-57jc is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Allocation of Resources Without Limits or Throttling in ckb

Also known asCVE-2021-45699GHSA-48vq-8jqv-gm6fRUSTSEC-2021-0108
Published
Jan 6, 2022
Updated
Nov 8, 2023
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 8, 2023 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🦀ckb

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 ckb crate before 0.40.0 for Rust. Remote attackers may be able to conduct a 51% attack against the Nervos CKB blockchain by triggering an inability to allocate memory for the misbehavior HashMap.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.iockball versions0.40.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ckb. 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 ckb to 0.40.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2969-8hh9-57jc 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-2969-8hh9-57jc 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-2969-8hh9-57jc. 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 ckb crate before 0.40.0 for Rust. Remote attackers may be able to conduct a 51% attack against the Nervos CKB blockchain by triggering an inability to allocate memory for the misbehavior HashMap.
O3 Security · Impact-Aware SCA

Is GHSA-2969-8hh9-57jc in your dependencies?

O3 detects GHSA-2969-8hh9-57jc 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-2969-8hh9-57jc: ckb (High 7.5) | O3 Security