| Name | CVE-2018-16395 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1558-1, DSA-4332-1 |
| Debian Bugs | 911918, 911919 |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ruby-openssl | source | (unstable) | 2.1.2-1 | 911918 | ||
| ruby2.1 | source | jessie | 2.1.5-2+deb8u6 | DLA-1558-1 | ||
| ruby2.1 | source | (unstable) | (unfixed) | |||
| ruby2.3 | source | stretch | 2.3.3-1+deb9u4 | DSA-4332-1 | ||
| ruby2.3 | source | (unstable) | (unfixed) | |||
| ruby2.5 | source | (unstable) | 2.5.3-1 | 911919 |
https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/
https://github.com/ruby/openssl/commit/f653cfa43f0f20e8c440122ea982382b6228e7f5