NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
🦀 crates.io
Not in CISA KEV

ckb: Transaction header_deps validation issue (network forking)GHSA-7fw6-6mfj-g3q2

Fix: nervosnetwork/ckb#1646

GHSA-7fw6-6mfj-g3q2 is a security vulnerability in ckb. A fix is available for ckb — see the affected versions and patch details below.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 2, 2022 · OSV.dev, 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

Impact

fn HeaderChecker#check_valid skipped main chain checking after this PR: https://github.com/nervosnetwork/ckb/pull/1646/files#diff-c4e017b67c1b3005ca0c446a9b0879571aa36a858b1f7ddd1b9328a884e3214bR171-R176

It will cause network forking if one transaction is using a forked block header which is not exists in local node's storage.

Patches

0.101.1 and later versions

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.iockball versions0.101.1cargo update -p ckb --precise 0.101.1

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, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update ckb to 0.101.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-7fw6-6mfj-g3q2 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.

Frequently Asked Questions

### Impact fn `HeaderChecker#check_valid` skipped main chain checking after this PR: https://github.com/nervosnetwork/ckb/pull/1646/files#diff-c4e017b67c1b3005ca0c446a9b0879571aa36a858b1f7ddd1b9328a884e3214bR171-R176 It will cause network forking if one transaction is using a forked block header which is not exists in local node's storage. ### Patches 0.101.1 and later versions
O3 Security · Impact-Aware SCA

Is GHSA-7fw6-6mfj-g3q2 in your dependencies?

Find it across crates.io, including transitive dependencies.

Scan my dependencies How O3 SCA works
ckb: Transaction header_deps validation issue (network…