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GHSA-mmrq-6999-72v8

Ruby Openssl Allows Incorrect Value Comparison

Source: GitHub Advisory Database (reviewed) Critical CVE-2018-16395

Packages

EcosystemPackageAffectedFixed in
RubyGems openssl < 2.0.9 2.0.9
RubyGems openssl >= 2.1.0, < 2.1.2 2.1.2

Details

As written in the advisory (Markdown source, shown as plain text).

An issue was discovered in the OpenSSL library in Ruby 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

External links from the advisory. They lead to third-party sites.