Advisory Database
  • Advisories
  • Dependency Scanning
  1. gem
  2. ›
  3. openssl
  4. ›
  5. CVE-2018-16395

CVE-2018-16395: Improper Certificate Validation

November 16, 2018 (updated October 3, 2019)

When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects may return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the first argument, the result of == will be true. This could be leveraged to create an illegitimate certificate that may be accepted as legitimate and then used in signing or encryption operations.

References

  • www.securitytracker.com/id/1042105
  • nvd.nist.gov/vuln/detail/CVE-2018-16395
  • www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/
  • www.ruby-lang.org/en/news/2018/10/17/ruby-2-3-8-released/
  • www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/
  • www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/
  • www.ruby-lang.org/en/news/2018/11/06/ruby-2-6-0-preview3-released/

Code Behaviors & Features

Detect and mitigate CVE-2018-16395 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 2.1.2

Fixed versions

  • 2.1.2

Solution

Upgrade to version 2.1.2 or above.

Impact 9.8 CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Source file

gem/openssl/CVE-2018-16395.yml

Spotted a mistake? Edit the file on GitLab.

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

Page generated Wed, 14 May 2025 12:15:06 +0000.