GHSA-j35p-q24r-5367: Ckb Denial of Service Vulnerability

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Advisory Summary

GHSA-j35p-q24r-5367 is a HIGH denial of service vulnerability (General Security Weakness) affecting Ckb libraries in the crates.io ecosystem. The issue involves dep group remote memory exhaustion (denial of service) in ckb. Remediation is available by upgrading affected packages to version 0.43.1.

GHSA-j35p-q24r-5367 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-j35p-q24r-5367
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Ckb
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-j35p-q24r-5367

To remediate this vulnerability, upgrade all affected Ckb dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

ckb fixed: 0.43.1 
Upgrade ckb to 0.43.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for ckb

How to Check if You Are Affected

To determine whether your application is affected by GHSA-j35p-q24r-5367, inspect your project dependencies for Ckb:

inspect dependencies for ckb

Analyze the terminal output to locate any version of Ckb in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.43.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Ckb, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact A remote attacker could exploit this vulnerability to exhaust ckb process memory of an affected node. ### Patches Upgrade to 0.43.1 or later. ### References After resolving the outpoints of one dep group, we put the corresponding content into a vec ( https://github.com/nervosnetwork/ckb/blob/v0.42.0/util/types/src/core/cell.rs#L600-L617 ), there is a vulnerability to a memory dos attack because there is no determination of whether the outpoints is duplicated. PoC: ``` before send dos tx rss: 105700 after rss: 2306932 ``` DoS cost: 25.6 KB * 150 + dep_tx out_points capacity ( 36 * 150 * 100 = 540000 ) = 4380000 CKB Send 50 dos_tx, memory exhausted: (25.6 KB * 150 * 100) * 50 = 19.2 GB

GHSA-j35p-q24r-5367 Affected Ckb Versions

1 component(s)
Fixed Versions:
0.43.1
Product / Package Ecosystem Affected Versions Fixed Version
ckb
 crates.io
< 0.43.1
0.43.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/nervosnetwork/ckb/security/advisories/GHSA-j35p-q24r-5367
Ckb Source Repository REPOSITORY
https://github.com/nervosnetwork/ckb
Ckb Source Repository REPOSITORY
https://github.com/nervosnetwork/ckb/blob/v0.42.0/util/types/src/core/cell.rs#L600-L617

Frequently Asked Questions

What is GHSA-j35p-q24r-5367?
GHSA-j35p-q24r-5367 is a security vulnerability in Ckb involving Dep Group Remote Memory Exhaustion (Denial of Service) in ckb under General Security Weakness.
Which Ckb versions are affected?
Affected versions include releases prior to 0.43.1 across affected packages: ckb.
What version fixes GHSA-j35p-q24r-5367?
Upgrading to 0.43.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ckb affected?
Yes, ckb is affected in releases prior to 0.43.1. Upgrade your dependency to 0.43.1 or later.
What CWE is associated with GHSA-j35p-q24r-5367?
GHSA-j35p-q24r-5367 is classified under General Security Weakness.
How can I check crates.io dependencies for GHSA-j35p-q24r-5367?
Run the dependency tree command: 'inspect dependencies for ckb'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j35p-q24r-5367",
  "modified" : "2022-04-22T20:23:04Z",
  "published" : "2022-04-22T20:23:04Z",
  "aliases" : [ ],
  "summary" : "Dep Group Remote Memory Exhaustion (Denial of Service) in ckb",
  "details" : "### Impact\nA remote attacker could exploit this vulnerability to exhaust ckb process memory of an affected node.\n\n### Patches\nUpgrade to 0.43.1 or later.\n\n### References\nAfter resolving the outpoints of one dep group, we put the corresponding content into a vec ( https://github.com/nervosnetwork/ckb/blob/v0.42.0/util/types/src/core/cell.rs#L600-L617 ), there is a vulnerability to a memory dos attack because there is no determination of whether the outpoints is duplicated.\n\nPoC:\n```\nbefore send dos tx rss:\n105700\n\nafter rss:\n2306932\n```\n\nDoS cost: 25.6 KB * 150 + dep_tx out_points capacity ( 36 * 150 * 100 = 540000 ) = 4380000 CKB\nSend 50 dos_tx, memory exhausted: (25.6 KB * 150  * 100) * 50 = 19.2 GB\n\n",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ckb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.43.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/nervosnetwork/ckb/security/advisories/GHSA-j35p-q24r-5367"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/nervosnetwork/ckb"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nervosnetwork/ckb/blob/v0.42.0/util/types/src/core/cell.rs#L600-L617"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-04-22T20:23:04Z",
    "nvd_published_at" : null
  }
}