{"id":"UBUNTU-CVE-2019-19906","details":"cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.","modified":"2026-04-22T12:16:27.218640Z","published":"2019-12-19T18:15:00Z","related":["USN-4256-1"],"upstream":["CVE-2019-19906"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-19906"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4256-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-19906"}],"affected":[{"package":{"name":"cyrus-sasl2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/cyrus-sasl2@2.1.25.dfsg1-17ubuntu0.1~esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.25.dfsg1-17ubuntu0.1~esm1"}]}],"versions":["2.1.25.dfsg1-17","2.1.25.dfsg1-17build1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-2"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-modules"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-modules-db"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-modules-gssapi-heimdal"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-modules-gssapi-mit"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-modules-ldap"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-modules-otp"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"libsasl2-modules-sql"},{"binary_version":"2.1.25.dfsg1-17ubuntu0.1~esm1","binary_name":"sasl2-bin"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19906.json"}},{"package":{"name":"cyrus-sasl2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/cyrus-sasl2@2.1.26.dfsg1-14ubuntu0.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.26.dfsg1-14ubuntu0.2"}]}],"versions":["2.1.26.dfsg1-14","2.1.26.dfsg1-14build1","2.1.26.dfsg1-14ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-2"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-modules"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-modules-db"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-modules-gssapi-heimdal"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-modules-gssapi-mit"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-modules-ldap"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-modules-otp"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"libsasl2-modules-sql"},{"binary_version":"2.1.26.dfsg1-14ubuntu0.2","binary_name":"sasl2-bin"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19906.json"}},{"package":{"name":"cyrus-sasl2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/cyrus-sasl2@2.1.27~101-g0780600+dfsg-3ubuntu2.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.27~101-g0780600+dfsg-3ubuntu2.1"}]}],"versions":["2.1.27~101-g0780600+dfsg-3ubuntu1","2.1.27~101-g0780600+dfsg-3ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-2"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-modules"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-modules-db"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-modules-gssapi-heimdal"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-modules-gssapi-mit"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-modules-ldap"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-modules-otp"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"libsasl2-modules-sql"},{"binary_version":"2.1.27~101-g0780600+dfsg-3ubuntu2.1","binary_name":"sasl2-bin"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19906.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}