In the bindata RubyGem before version 2.4.10 there is a potential denial-of-service vulnerability. In affected versions it is very slow for certain classes in BinData to be created. For example BinData::Bit100000, BinData::Bit100001, BinData::Bit100002, BinData::Bit<N>. In combination with <user_input>.constantize there is a potential for a CPU-based DoS. In version 2.4.10, bindata improved the creation time of Bits and Integers.

References

• rubysec/ruby-advisory-db#476
• dmendel/bindata@d99f050
• https://about.gitlab.com/releases/2021/06/01/security-release-gitlab-13-12-2-released/#update-bindata-dependency
• https://github.com/dmendel/bindata/blob/master/ChangeLog.rdoc#version-2410-2021-05-18-
• https://rubygems.org/gems/bindata
• https://nvd.nist.gov/vuln/detail/CVE-2021-32823
• https://github.com/dmendel/bindata/blob/v2.4.10/ChangeLog.rdoc#version-2410-2021-05-18-