CVE-2020-7654: Snyk broker Information Exposure Vulnerability

HIGH
Advisory Identifier: GHSA-mgh5-4h95-qj4p
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CVSS 7.5
CWE-532
Published
Advisory Summary

CVE-2020-7654 is a HIGH (CVSS 7.5) information exposure vulnerability (CWE-532: Insertion of Sensitive Information into Log File) affecting Snyk broker libraries in the npm ecosystem. The issue involves information exposure in snyk broker. Remediation is available by upgrading affected packages to version 4.73.1.

CVE-2020-7654 at a Glance

CVE Identifier CVE-2020-7654
GHSA Identifier GHSA-mgh5-4h95-qj4p
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-532: Insertion of Sensitive Information into Log File
Affected Product Snyk broker
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/A:N).

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 None (I:N)
Availability None (A:N)

How to Fix CVE-2020-7654

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

snyk-broker fixed: 4.73.1 
npm install snyk-broker@4.73.1
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 snyk-broker

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7654, inspect your project dependencies using npm:

npm ls snyk-broker

Analyze the terminal output to locate any version of Snyk broker in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.73.1), your application is affected.

Note: The npm ls snyk-broker 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-532: Insertion of Sensitive Information into Log File, where the product writes sensitive information to a log file. In Snyk broker, 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 snyk-broker before 4.73.1 are vulnerable to Information Exposure. It logs private keys if logging level is set to DEBUG.

CVE-2020-7654 Affected Snyk broker Versions

1 component(s)
Fixed Versions:
4.73.1
Product / Package Ecosystem Affected Versions Fixed Version
snyk-broker
npm/snyk-broker
npm
< 4.73.1
4.73.1

References

NVD — CVE-2020-7654 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7654
snyk.io/vuln/snyk-js-snykbr... WEB
https://snyk.io/vuln/SNYK-JS-SNYKBROKER-570613
Snyk broker Security Information SECURITY
https://updates.snyk.io/snyk-broker-security-fixes-152338

Frequently Asked Questions

What is CVE-2020-7654?
CVE-2020-7654 is a security vulnerability in Snyk broker involving Information Exposure in Snyk Broker under CWE-532: Insertion of Sensitive Information into Log File.
Which Snyk broker versions are affected?
Affected versions include releases prior to 4.73.1 across affected packages: snyk-broker.
What version fixes CVE-2020-7654?
Upgrading to 4.73.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is snyk-broker affected?
Yes, snyk-broker is affected in releases prior to 4.73.1. Upgrade your dependency to 4.73.1 or later.
What is the CVSS score of CVE-2020-7654?
CVE-2020-7654 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2020-7654?
CVE-2020-7654 is classified under CWE-532: Insertion of Sensitive Information into Log File (The product writes sensitive information to a log file.).
How can I check npm dependencies for CVE-2020-7654?
Run the dependency tree command: 'npm ls snyk-broker'. 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-mgh5-4h95-qj4p",
  "modified" : "2021-07-29T17:51:23Z",
  "published" : "2020-06-03T22:02:14Z",
  "aliases" : [ "CVE-2020-7654" ],
  "summary" : "Information Exposure in Snyk Broker",
  "details" : "All versions of snyk-broker before 4.73.1 are vulnerable to Information Exposure. It logs private keys if logging level is set to DEBUG.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "snyk-broker"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.73.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7654"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-SNYKBROKER-570613"
  }, {
    "type" : "WEB",
    "url" : "https://updates.snyk.io/snyk-broker-security-fixes-152338"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-532" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-01T19:41:28Z",
    "nvd_published_at" : "2020-05-29T22:15:00Z"
  }
}