GHSA-3gjh-29fv-8hr6: Ckb Nervos CKB Snappy Decompress Length Vulnerability

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Advisory Summary

GHSA-3gjh-29fv-8hr6 is a HIGH nervos ckb snappy decompress length vulnerability (General Security Weakness) affecting Ckb libraries in the crates.io ecosystem. The issue involves nervos ckb snappy decompress length can be very large and causes out of memory error. Remediation is available by upgrading affected packages to version 0.34.2.

GHSA-3gjh-29fv-8hr6 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-3gjh-29fv-8hr6
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-3gjh-29fv-8hr6

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: 0.34.2 
Upgrade ckb to 0.34.2
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-3gjh-29fv-8hr6, 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 0.34.2), 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 Adversary can create message which compressed size is less than the package limit but the decompressed length is very large such as 1G. It will cost the node many memories to process the network messages, and on the system with less than 1G memory, the process is killed directly because of out of memory error. ### Patches The node must check the decompress length before allocating the memory for the message. ### References * https://github.com/nervosnetwork/ckb/blob/687d797f1888dd05d1f38ce6d1bef3e5b9b6e38b/network/src/compress.rs#L68 * https://github.com/BurntSushi/rust-snappy/blob/master/src/decompress.rs#L106 * https://github.com/BurntSushi/rust-snappy/blob/6cfb836463b9b3ac48ca7cd15d0a50d030e95769/src/decompress.rs#L30

GHSA-3gjh-29fv-8hr6 Affected Ckb Versions

1 component(s)
Fixed Versions:
0.34.2
Product / Package Ecosystem Affected Versions Fixed Version
ckb
 crates.io
< 0.34.2
0.34.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/nervosnetwork/ckb/security/advisories/GHSA-3gjh-29fv-8hr6

Frequently Asked Questions

What is GHSA-3gjh-29fv-8hr6?
GHSA-3gjh-29fv-8hr6 is a security vulnerability in Ckb involving Nervos CKB Snappy decompress length can be very large and causes out of memory error under General Security Weakness.
Which Ckb versions are affected?
Affected versions include releases prior to 0.34.2 across affected packages: ckb.
What version fixes GHSA-3gjh-29fv-8hr6?
Upgrading to 0.34.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ckb affected?
Yes, ckb is affected in releases prior to 0.34.2. Upgrade your dependency to 0.34.2 or later.
What CWE is associated with GHSA-3gjh-29fv-8hr6?
GHSA-3gjh-29fv-8hr6 is classified under General Security Weakness.
How can I check crates.io dependencies for GHSA-3gjh-29fv-8hr6?
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-3gjh-29fv-8hr6",
  "modified" : "2024-02-03T00:18:10Z",
  "published" : "2024-02-03T00:18:10Z",
  "aliases" : [ ],
  "summary" : "Nervos CKB Snappy decompress length can be very large and causes out of memory error ",
  "details" : "### Impact\n\nAdversary can create message which compressed size is less than the package limit but the decompressed length is very large such as 1G. It will cost the node many memories to process the network messages, and on the system with less than 1G memory, the process is killed directly because of out of memory error.\n\n### Patches\n\nThe node must check the decompress length before allocating the memory for the message.\n\n### References\n\n* https://github.com/nervosnetwork/ckb/blob/687d797f1888dd05d1f38ce6d1bef3e5b9b6e38b/network/src/compress.rs#L68\n* https://github.com/BurntSushi/rust-snappy/blob/master/src/decompress.rs#L106\n* https://github.com/BurntSushi/rust-snappy/blob/6cfb836463b9b3ac48ca7cd15d0a50d030e95769/src/decompress.rs#L30",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ckb"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.34.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.34.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/nervosnetwork/ckb/security/advisories/GHSA-3gjh-29fv-8hr6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-03T00:18:10Z",
    "nvd_published_at" : null
  }
}