{"id":"UBUNTU-CVE-2019-15523","details":"An issue was discovered in LINBIT csync2 through 2.0. It does not correctly check for the return value GNUTLS_E_WARNING_ALERT_RECEIVED of the gnutls_handshake() function. It neglects to call this function again, as required by the design of the API.","modified":"2025-10-24T04:47:49Z","published":"2020-12-30T21:15:00Z","upstream":["CVE-2019-15523"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-15523"},{"type":"REPORT","url":"https://github.com/LINBIT/csync2/pull/13/commits/92742544a56bcbcd9ec99ca15f898b31797e39e2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-15523"}],"affected":[{"package":{"name":"csync2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/csync2@2.0+73d3293-2build2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0+73d3293-2","2.0+73d3293-2build1","2.0+73d3293-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0+73d3293-2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-15523.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/csync2@2.0-8-g175a01c-4ubuntu1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-8-g175a01c-4ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0-8-g175a01c-4ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-15523.json"}},{"package":{"name":"csync2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/csync2@2.0-22-gce67c55-1ubuntu1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-8-g175a01c-4ubuntu2","2.0-22-gce67c55-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"csync2","binary_version":"2.0-22-gce67c55-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-15523.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:N/I:L/A:N"},{"type":"Ubuntu","score":"low"}]}