CVE-2021-23386 (Medium) detected in dns-packet-5.2.1.tgz

[mend-bolt-for-github[bot]]

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CVE-2021-23386 - Medium Severity Vulnerability

Vulnerable Library - dns-packet-5.2.1.tgz

An abstract-encoding compliant module for encoding / decoding DNS packets

Library home page: https://registry.npmjs.org/dns-packet/-/dns-packet-5.2.1.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/dns-packet/package.json

Dependency Hierarchy:

• is-online-8.3.1.tgz (Root Library)
  • public-ip-4.0.1.tgz
    • dns-socket-4.2.0.tgz
      • :x: dns-packet-5.2.1.tgz (Vulnerable Library)

Found in HEAD commit: f50676ddd181267bda7ed62df4ad5ef6130eda5c

Found in base branch: master

Vulnerability Details

This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.

Publish Date: 2021-05-20

URL: CVE-2021-23386

CVSS 3 Score Details (6.5)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23386

Release Date: 2021-05-20

Fix Resolution (dns-packet): 5.2.2

Direct dependency fix Resolution (is-online): 8.4.0

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