{"id":"UBUNTU-CVE-2019-19269","details":"An issue was discovered in tls_verify_crl in ProFTPD through 1.3.6b. A dereference of a NULL pointer may occur. This pointer is returned by the OpenSSL sk_X509_REVOKED_value() function when encountering an empty CRL installed by a system administrator. The dereference occurs when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.","modified":"2026-05-20T16:06:17.775195874Z","published":"2019-11-30T23:15:00Z","upstream":["CVE-2019-19269"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-19269"},{"type":"REPORT","url":"https://github.com/proftpd/proftpd/issues/861"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-19269"}],"affected":[{"package":{"name":"proftpd-dfsg","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.5-2","1.3.5a-1","1.3.5a-1build1","1.3.5a-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"proftpd-basic","binary_version":"1.3.5a-1ubuntu0.1"},{"binary_name":"proftpd-mod-geoip","binary_version":"1.3.5a-1ubuntu0.1"},{"binary_version":"1.3.5a-1ubuntu0.1","binary_name":"proftpd-mod-ldap"},{"binary_name":"proftpd-mod-mysql","binary_version":"1.3.5a-1ubuntu0.1"},{"binary_name":"proftpd-mod-odbc","binary_version":"1.3.5a-1ubuntu0.1"},{"binary_version":"1.3.5a-1ubuntu0.1","binary_name":"proftpd-mod-pgsql"},{"binary_version":"1.3.5a-1ubuntu0.1","binary_name":"proftpd-mod-sqlite"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19269.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.5d-1","1.3.5e-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"proftpd-basic","binary_version":"1.3.5e-1build1"},{"binary_name":"proftpd-mod-geoip","binary_version":"1.3.5e-1build1"},{"binary_version":"1.3.5e-1build1","binary_name":"proftpd-mod-ldap"},{"binary_name":"proftpd-mod-mysql","binary_version":"1.3.5e-1build1"},{"binary_name":"proftpd-mod-odbc","binary_version":"1.3.5e-1build1"},{"binary_name":"proftpd-mod-pgsql","binary_version":"1.3.5e-1build1"},{"binary_version":"1.3.5e-1build1","binary_name":"proftpd-mod-sqlite"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19269.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.6-6build2","1.3.6c-1","1.3.6c-2","1.3.6c-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.3.6c-2ubuntu0.1","binary_name":"proftpd-basic"},{"binary_version":"1.3.6c-2ubuntu0.1","binary_name":"proftpd-mod-geoip"},{"binary_name":"proftpd-mod-ldap","binary_version":"1.3.6c-2ubuntu0.1"},{"binary_name":"proftpd-mod-mysql","binary_version":"1.3.6c-2ubuntu0.1"},{"binary_name":"proftpd-mod-odbc","binary_version":"1.3.6c-2ubuntu0.1"},{"binary_version":"1.3.6c-2ubuntu0.1","binary_name":"proftpd-mod-pgsql"},{"binary_name":"proftpd-mod-snmp","binary_version":"1.3.6c-2ubuntu0.1"},{"binary_name":"proftpd-mod-sqlite","binary_version":"1.3.6c-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19269.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.7b+dfsg-1","1.3.7c+dfsg-1build1","1.3.7c+dfsg-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"proftpd-basic","binary_version":"1.3.7c+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-core","binary_version":"1.3.7c+dfsg-1ubuntu0.1"},{"binary_version":"1.3.7c+dfsg-1ubuntu0.1","binary_name":"proftpd-mod-crypto"},{"binary_version":"1.3.7c+dfsg-1ubuntu0.1","binary_name":"proftpd-mod-geoip"},{"binary_name":"proftpd-mod-ldap","binary_version":"1.3.7c+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-mysql","binary_version":"1.3.7c+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-odbc","binary_version":"1.3.7c+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-pgsql","binary_version":"1.3.7c+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-snmp","binary_version":"1.3.7c+dfsg-1ubuntu0.1"},{"binary_version":"1.3.7c+dfsg-1ubuntu0.1","binary_name":"proftpd-mod-sqlite"},{"binary_version":"1.3.7c+dfsg-1ubuntu0.1","binary_name":"proftpd-mod-wrap"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19269.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.8+dfsg-8","1.3.8.a+dfsg-1","1.3.8.b+dfsg-1","1.3.8.b+dfsg-1build1","1.3.8.b+dfsg-1build2","1.3.8.b+dfsg-1build3","1.3.8.b+dfsg-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"proftpd-core","binary_version":"1.3.8.b+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-crypto","binary_version":"1.3.8.b+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-geoip","binary_version":"1.3.8.b+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-ldap","binary_version":"1.3.8.b+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-mysql","binary_version":"1.3.8.b+dfsg-1ubuntu0.1"},{"binary_name":"proftpd-mod-odbc","binary_version":"1.3.8.b+dfsg-1ubuntu0.1"},{"binary_version":"1.3.8.b+dfsg-1ubuntu0.1","binary_name":"proftpd-mod-pgsql"},{"binary_version":"1.3.8.b+dfsg-1ubuntu0.1","binary_name":"proftpd-mod-snmp"},{"binary_name":"proftpd-mod-sqlite","binary_version":"1.3.8.b+dfsg-1ubuntu0.1"},{"binary_version":"1.3.8.b+dfsg-1ubuntu0.1","binary_name":"proftpd-mod-wrap"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19269.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.8.c+dfsg-2","1.3.8.c+dfsg-4","1.3.9~dfsg-3"],"ecosystem_specific":{"binaries":[{"binary_name":"proftpd-core","binary_version":"1.3.9~dfsg-3"},{"binary_version":"1.3.9~dfsg-3","binary_name":"proftpd-mod-crypto"},{"binary_name":"proftpd-mod-geoip","binary_version":"1.3.9~dfsg-3"},{"binary_name":"proftpd-mod-ldap","binary_version":"1.3.9~dfsg-3"},{"binary_name":"proftpd-mod-mysql","binary_version":"1.3.9~dfsg-3"},{"binary_version":"1.3.9~dfsg-3","binary_name":"proftpd-mod-odbc"},{"binary_name":"proftpd-mod-pgsql","binary_version":"1.3.9~dfsg-3"},{"binary_name":"proftpd-mod-snmp","binary_version":"1.3.9~dfsg-3"},{"binary_name":"proftpd-mod-sqlite","binary_version":"1.3.9~dfsg-3"},{"binary_version":"1.3.9~dfsg-3","binary_name":"proftpd-mod-wrap"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19269.json"}},{"package":{"name":"proftpd-dfsg","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.9~dfsg-3","1.3.9~dfsg-4"],"ecosystem_specific":{"binaries":[{"binary_name":"proftpd-core","binary_version":"1.3.9~dfsg-4"},{"binary_name":"proftpd-mod-crypto","binary_version":"1.3.9~dfsg-4"},{"binary_name":"proftpd-mod-geoip","binary_version":"1.3.9~dfsg-4"},{"binary_name":"proftpd-mod-ldap","binary_version":"1.3.9~dfsg-4"},{"binary_name":"proftpd-mod-mysql","binary_version":"1.3.9~dfsg-4"},{"binary_name":"proftpd-mod-odbc","binary_version":"1.3.9~dfsg-4"},{"binary_name":"proftpd-mod-pgsql","binary_version":"1.3.9~dfsg-4"},{"binary_version":"1.3.9~dfsg-4","binary_name":"proftpd-mod-snmp"},{"binary_version":"1.3.9~dfsg-4","binary_name":"proftpd-mod-sqlite"},{"binary_name":"proftpd-mod-wrap","binary_version":"1.3.9~dfsg-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19269.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}