{"id":"UBUNTU-CVE-2023-28756","details":"A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.","modified":"2026-05-20T16:07:26.541852078Z","published":"2023-03-31T04:15:00Z","related":["USN-6055-1","USN-6055-2","USN-6087-1","USN-6181-1"],"upstream":["CVE-2023-28756"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-28756"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/news/2023/03/30/redos-in-time-cve-2023-28756/"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/news/2022/12/25/ruby-3-2-0-released/"},{"type":"REPORT","url":"https://github.com/ruby/time/releases/"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/downloads/releases/"},{"type":"REPORT","url":"https://github.com/ruby/ruby/commit/957bb7cb81995f26c671afce0ee50a5c660e540e"},{"type":"REPORT","url":"https://github.com/ruby/time/commit/3dce6f73d14f5fad6d9b302393fd02df48797b11"},{"type":"REPORT","url":"https://github.com/ruby/time/commit/b57db51f577875d3e896dcd2ef1dcaf97f23e943"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6055-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6055-2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6087-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6181-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-28756"}],"affected":[{"package":{"name":"jruby","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/jruby?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.6-5ubuntu1","1.5.6-6","1.5.6-7","1.5.6-9+deb8u2build0.14.04.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.6-9+deb8u2build0.14.04.1~esm2","binary_name":"jruby"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-28756.json"}},{"package":{"name":"ruby2.3","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ruby2.3?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-2~ubuntu16.04.16+esm7"}]}],"versions":["2.3.0-1","2.3.0-2","2.3.0-4ubuntu2","2.3.0-4ubuntu3","2.3.0-5ubuntu1","2.3.1-2~16.04","2.3.1-2~16.04.2","2.3.1-2~16.04.4","2.3.1-2~16.04.5","2.3.1-2~16.04.6","2.3.1-2~16.04.7","2.3.1-2~16.04.9","2.3.1-2~16.04.10","2.3.1-2~16.04.11","2.3.1-2~16.04.12","2.3.1-2~ubuntu16.04.13","2.3.1-2~ubuntu16.04.14","2.3.1-2~ubuntu16.04.15","2.3.1-2~ubuntu16.04.16","2.3.1-2~ubuntu16.04.16+esm1","2.3.1-2~ubuntu16.04.16+esm2","2.3.1-2~ubuntu16.04.16+esm3","2.3.1-2~ubuntu16.04.16+esm4","2.3.1-2~ubuntu16.04.16+esm5","2.3.1-2~ubuntu16.04.16+esm6"],"ecosystem_specific":{"availability":"Available 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