{"id":"USN-5806-1","summary":"ruby2.3 vulnerability","details":"Hiroshi Tokumaru discovered that Ruby did not properly handle certain\nuser input for applications which generate HTTP responses using cgi gem.\nAn attacker could possibly use this issue to maliciously modify the\nresponse a user would receive from a vulnerable application.\n","modified":"2026-06-25T13:31:41.582535773Z","published":"2023-01-17T15:59:06Z","related":["UBUNTU-CVE-2021-33621"],"upstream":["CVE-2021-33621","UBUNTU-CVE-2021-33621"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5806-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-33621"}],"affected":[{"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+esm4"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"libruby2.3","binary_version":"2.3.1-2~ubuntu16.04.16+esm4"},{"binary_name":"ruby2.3","binary_version":"2.3.1-2~ubuntu16.04.16+esm4"},{"binary_version":"2.3.1-2~ubuntu16.04.16+esm4","binary_name":"ruby2.3-tcltk"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2021-33621","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5806-1.json"}}],"schema_version":"1.7.5"}