GHSA-8q2c-2396-hf7j: Appx compiler Malicious Package Vulnerability

CRITICAL
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CVSS 9.8
CWE-506
Published
Advisory Summary

GHSA-8q2c-2396-hf7j is a CRITICAL (CVSS 9.8) malicious package vulnerability (CWE-506: Embedded Malicious Code) affecting Appx compiler libraries in the npm ecosystem. The issue involves malicious package in appx-compiler. Remediation is available in the latest vendor maintenance releases.

GHSA-8q2c-2396-hf7j at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-8q2c-2396-hf7j
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-506: Embedded Malicious Code
Affected Product Appx compiler
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-8q2c-2396-hf7j

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

appx-compiler fixed: Latest secure release 
npm install appx-compiler@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 appx-compiler

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-8q2c-2396-hf7j, inspect your project dependencies using npm:

npm ls appx-compiler

Analyze the terminal output to locate any version of Appx compiler 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 appx-compiler 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 Appx compiler, 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

All versions of `appx-compiler` contain malicious code. The package uploads system information to a remote server, downloads a file and executes it. ## Recommendation Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

GHSA-8q2c-2396-hf7j Affected Appx compiler Versions

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

References

www.npmjs.com/advisories/1050 WEB
https://www.npmjs.com/advisories/1050

Frequently Asked Questions

What is GHSA-8q2c-2396-hf7j?
GHSA-8q2c-2396-hf7j is a security vulnerability in Appx compiler involving Malicious Package in appx-compiler under CWE-506: Embedded Malicious Code.
Which Appx compiler versions are affected?
Affected versions include releases prior to current release patches across affected packages: appx-compiler.
What version fixes GHSA-8q2c-2396-hf7j?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is appx-compiler affected?
Yes, appx-compiler 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-8q2c-2396-hf7j?
GHSA-8q2c-2396-hf7j 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-8q2c-2396-hf7j?
GHSA-8q2c-2396-hf7j 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-8q2c-2396-hf7j?
Run the dependency tree command: 'npm ls appx-compiler'. 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-8q2c-2396-hf7j",
  "modified" : "2021-09-30T19:31:14Z",
  "published" : "2020-09-03T17:34:55Z",
  "aliases" : [ ],
  "summary" : "Malicious Package in appx-compiler",
  "details" : "All versions of `appx-compiler` contain malicious code. The package uploads system information to a remote server, downloads a file and executes it.\n\n\n## Recommendation\n\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer.\n\nThe package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.",
  "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" : "appx-compiler"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1050"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-506" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:45:29Z",
    "nvd_published_at" : null
  }
}