{"id":"UBUNTU-CVE-2020-10730","details":"A NULL pointer dereference, or possible use-after-free flaw was found in Samba AD LDAP server in versions before 4.10.17, before 4.11.11 and before 4.12.4. Although some versions of Samba shipped with Red Hat Enterprise Linux do not support Samba in AD mode, the affected code is shipped with the libldb package. This flaw allows an authenticated user to possibly trigger a use-after-free or NULL pointer dereference. The highest threat from this vulnerability is to system availability.","modified":"2026-04-22T12:25:18.690069Z","published":"2020-07-02T00:00:00Z","related":["USN-4409-1"],"upstream":["CVE-2020-10730"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-10730"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4409-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-10730"}],"affected":[{"package":{"name":"samba","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.17?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"}]}],"versions":["2:4.6.7+dfsg-1ubuntu3","2:4.7.1+dfsg-1ubuntu1","2:4.7.3+dfsg-1ubuntu1","2:4.7.4+dfsg-1ubuntu1","2:4.7.6+dfsg~ubuntu-0ubuntu1","2:4.7.6+dfsg~ubuntu-0ubuntu2","2:4.7.6+dfsg~ubuntu-0ubuntu2.2","2:4.7.6+dfsg~ubuntu-0ubuntu2.4","2:4.7.6+dfsg~ubuntu-0ubuntu2.5","2:4.7.6+dfsg~ubuntu-0ubuntu2.6","2:4.7.6+dfsg~ubuntu-0ubuntu2.7","2:4.7.6+dfsg~ubuntu-0ubuntu2.9","2:4.7.6+dfsg~ubuntu-0ubuntu2.10","2:4.7.6+dfsg~ubuntu-0ubuntu2.11","2:4.7.6+dfsg~ubuntu-0ubuntu2.13","2:4.7.6+dfsg~ubuntu-0ubuntu2.14","2:4.7.6+dfsg~ubuntu-0ubuntu2.15","2:4.7.6+dfsg~ubuntu-0ubuntu2.16"],"ecosystem_specific":{"binaries":[{"binary_name":"ctdb","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17","binary_name":"libnss-winbind"},{"binary_name":"libpam-winbind","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"libparse-pidl-perl","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"libsmbclient","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"libwbclient0","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"python-samba","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17","binary_name":"registry-tools"},{"binary_name":"samba","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"samba-common","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"samba-common-bin","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"samba-dsdb-modules","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"samba-libs","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17","binary_name":"samba-testsuite"},{"binary_name":"samba-vfs-modules","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_name":"smbclient","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17"},{"binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.17","binary_name":"winbind"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10730.json"}},{"package":{"name":"samba","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/samba@2:4.11.6+dfsg-0ubuntu1.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.11.6+dfsg-0ubuntu1.3"}]}],"versions":["2:4.10.7+dfsg-0ubuntu2","2:4.10.7+dfsg-0ubuntu3","2:4.11.1+dfsg-3ubuntu1","2:4.11.1+dfsg-3ubuntu2","2:4.11.1+dfsg-3ubuntu4","2:4.11.5+dfsg-1ubuntu1","2:4.11.5+dfsg-1ubuntu2","2:4.11.6+dfsg-0ubuntu1","2:4.11.6+dfsg-0ubuntu1.1","2:4.11.6+dfsg-0ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_version":"2:4.11.6+dfsg-0ubuntu1.3","binary_name":"ctdb"},{"binary_name":"libnss-winbind","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"libpam-winbind","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"libsmbclient","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"libwbclient0","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_version":"2:4.11.6+dfsg-0ubuntu1.3","binary_name":"python3-samba"},{"binary_name":"registry-tools","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"samba","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_version":"2:4.11.6+dfsg-0ubuntu1.3","binary_name":"samba-common"},{"binary_name":"samba-common-bin","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"samba-dsdb-modules","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"samba-libs","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"samba-testsuite","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"samba-vfs-modules","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"smbclient","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"},{"binary_name":"winbind","binary_version":"2:4.11.6+dfsg-0ubuntu1.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10730.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}