GHSA-f64g-whxf-w8f2: Buffar xor Malicious Package Vulnerability

CRITICAL
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CVSS 9.8
CWE-506
Published
Advisory Summary

GHSA-f64g-whxf-w8f2 is a CRITICAL (CVSS 9.8) malicious package vulnerability (CWE-506: Embedded Malicious Code) affecting Buffar xor libraries in the npm ecosystem. The issue involves malicious package in buffar-xor. Remediation is available in the latest vendor maintenance releases.

GHSA-f64g-whxf-w8f2 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-f64g-whxf-w8f2
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-506: Embedded Malicious Code
Affected Product Buffar xor
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix GHSA-f64g-whxf-w8f2

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

buffar-xor fixed: Latest secure release 
npm install buffar-xor@Latest secure release
Verify Direct and Transitive Dependencies

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

npm ls buffar-xor

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-f64g-whxf-w8f2, inspect your project dependencies using npm:

npm ls buffar-xor

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

Note: The npm ls buffar-xor command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-506: Embedded Malicious Code, where the product contains code that appears to be malicious in nature. In Buffar xor, 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

Version 2.0.2 contained malicious code. The package targeted the Ethereum cryptocurrency and performed transactions to wallets not controlled by the user. ## Recommendation Remove the package from your environment. Ensure no Ethereum funds were compromised.

GHSA-f64g-whxf-w8f2 Affected Buffar xor Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
buffar-xor
npm/buffar-xor
npm
≥ 0.0.0

References

www.npmjs.com/advisories/1236 WEB
https://www.npmjs.com/advisories/1236

Frequently Asked Questions

What is GHSA-f64g-whxf-w8f2?
GHSA-f64g-whxf-w8f2 is a security vulnerability in Buffar xor involving Malicious Package in buffar-xor under CWE-506: Embedded Malicious Code.
Which Buffar xor versions are affected?
Affected versions include releases prior to current release patches across affected packages: buffar-xor.
What version fixes GHSA-f64g-whxf-w8f2?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is buffar-xor affected?
Yes, buffar-xor is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of GHSA-f64g-whxf-w8f2?
GHSA-f64g-whxf-w8f2 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with GHSA-f64g-whxf-w8f2?
GHSA-f64g-whxf-w8f2 is classified under CWE-506: Embedded Malicious Code (The product contains code that appears to be malicious in nature.).
How can I check npm dependencies for GHSA-f64g-whxf-w8f2?
Run the dependency tree command: 'npm ls buffar-xor'. 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-f64g-whxf-w8f2",
  "modified" : "2021-09-29T20:56:59Z",
  "published" : "2020-09-03T21:44:06Z",
  "aliases" : [ ],
  "summary" : "Malicious Package in buffar-xor",
  "details" : "Version 2.0.2 contained malicious code. The package targeted the Ethereum cryptocurrency and performed transactions to wallets not controlled by the user.\n\n\n## Recommendation\n\nRemove the package from your environment. Ensure no Ethereum funds were compromised.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "buffar-xor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1236"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-506" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:51:50Z",
    "nvd_published_at" : null
  }
}