UBUNTU-CVE-2018-16395

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UBUNTU-CVE-2018-16395

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2018-16395, https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/, https://ubuntu.com/security/notices/USN-3808-1, https://www.cve.org/CVERecord?id=CVE-2018-16395