An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. 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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-1558-1 ruby2.1 security update
Debian DSA Debian DSA DSA-4332-1 ruby2.3 security update
EUVD EUVD EUVD-2022-4596 An issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. 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.
Github GHSA Github GHSA GHSA-mmrq-6999-72v8 Ruby Openssl Allows Incorrect Value Comparison
Ubuntu USN Ubuntu USN USN-3808-1 Ruby vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.08063}

epss

{'score': 0.07275}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T10:24:32.106Z

Reserved: 2018-09-03T00:00:00

Link: CVE-2018-16395

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-11-16T18:29:00.943

Modified: 2024-11-21T03:52:40.143

Link: CVE-2018-16395

cve-icon Redhat

Severity : Important

Publid Date: 2018-10-17T00:00:00Z

Links: CVE-2018-16395 - Bugzilla

cve-icon OpenCVE Enrichment

No data.