Advisory Database
  • Advisories
  • Dependency Scanning
  1. nuget
  2. ›
  3. DNS
  4. ›
  5. CVE-2021-4248

CVE-2021-4248: Insufficient Entropy in PRNG

December 18, 2022 (updated December 31, 2022)

A vulnerability was found in kapetan dns up to 6.1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file DNS/Protocol/Request.cs. The manipulation leads to insufficient entropy in prng. The attack may be launched remotely. Upgrading to version 7.0.0 is able to address this issue. The name of the patch is cf7105aa2aae90d6656088fe5a8ee1d5730773b6. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216188.

References

  • github.com/advisories/GHSA-g3wc-xv93-445q
  • github.com/kapetan/dns/commit/cf7105aa2aae90d6656088fe5a8ee1d5730773b6
  • github.com/kapetan/dns/pull/88
  • github.com/kapetan/dns/releases/tag/v7.0.0
  • nvd.nist.gov/vuln/detail/CVE-2021-4248
  • vuldb.com/?id.216188

Code Behaviors & Features

Detect and mitigate CVE-2021-4248 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 7.0.0

Fixed versions

  • 7.0.0

Solution

Upgrade to version 7.0.0 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-330: Use of Insufficiently Random Values
  • CWE-331: Insufficient Entropy
  • CWE-332: Insufficient Entropy in PRNG

Source file

nuget/DNS/CVE-2021-4248.yml

Spotted a mistake? Edit the file on GitLab.

  • Site Repo
  • About GitLab
  • Terms
  • Privacy Statement
  • Contact

Page generated Wed, 14 May 2025 12:15:00 +0000.