CVE-2021-44907 (High) detected in qs-6.5.2.tgz

[mend-bolt-for-github]

CVE-2021-44907 - High Severity Vulnerability

Vulnerable Library - qs-6.5.2.tgz

A querystring parser that supports nesting and arrays, with a depth limit

Library home page: https://registry.npmjs.org/qs/-/qs-6.5.2.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/express/node_modules/qs/package.json,/node_modules/body-parser/node_modules/qs/package.json,/node_modules/qs/package.json

Dependency Hierarchy:

• body-parser-1.18.3.tgz (Root Library)
  • ❌ qs-6.5.2.tgz (Vulnerable Library)

Found in HEAD commit: 388ab5bcd5fbdb7c4a502b982a3469479c0460ba

Vulnerability Details

A Denial of Service vulnerability exists in qs up to 6.8.0 due to insufficient sanitization of property in the gs.parse function. The merge() function allows the assignment of properties on an array in the query. For any property being assigned, a value in the array is converted to an object containing these properties. Essentially, this means that the property whose expected type is Array always has to be checked with Array.isArray() by the user. This may not be obvious to the user and can cause unexpected behavior.

Publish Date: 2022-03-17

URL: CVE-2021-44907

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44907

Release Date: 2022-03-17

Fix Resolution (qs): 6.8.1

Direct dependency fix Resolution (body-parser): 1.19.1

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