{"id":"UBUNTU-CVE-2021-40540","details":"ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info-\u003erequest NULL check for certain malformed HTTP requests.","modified":"2025-10-24T04:50:34Z","published":"2021-09-07T02:15:00Z","upstream":["CVE-2021-40540"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-40540"},{"type":"REPORT","url":"https://github.com/babelouest/ulfius/commit/c83f564c184a27145e07c274b305cabe943bbfaa"},{"type":"REPORT","url":"https://github.com/babelouest/ulfius/compare/v2.7.3...v2.7.4"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-40540"}],"affected":[{"package":{"name":"ulfius","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ulfius@2.2.4-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0-1","2.1.2-1","2.2.4-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libulfius-dev","binary_version":"2.2.4-1"},{"binary_name":"libulfius2.2","binary_version":"2.2.4-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40540.json"}},{"package":{"name":"ulfius","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ulfius@2.5.2-4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.2-4"],"ecosystem_specific":{"binaries":[{"binary_name":"libulfius-dev","binary_version":"2.5.2-4"},{"binary_name":"libulfius2.5","binary_version":"2.5.2-4"},{"binary_name":"uwsc","binary_version":"2.5.2-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40540.json"}},{"package":{"name":"ulfius","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ulfius@2.7.7-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4-1ubuntu3","2.7.6-1ubuntu1","2.7.7-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libulfius-dev","binary_version":"2.7.7-1"},{"binary_name":"libulfius2.7","binary_version":"2.7.7-1"},{"binary_name":"uwsc","binary_version":"2.7.7-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40540.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}