{"id":"USN-3976-3","summary":"samba regression","details":"USN-3976-1 fixed a vulnerability in Samba. The update introduced a\nregression causing Samba to occasionally crash. This update fixes the\nproblem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked\n S4U2Self packets. In certain environments, a remote attacker could possibly\n use this issue to escalate privileges.\n","modified":"2026-04-22T09:55:37.958721Z","published":"2019-05-27T11:39:45Z","references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3976-3"},{"type":"REPORT","url":"https://launchpad.net/bugs/1827924"}],"affected":[{"package":{"name":"samba","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.21?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.3.11+dfsg-0ubuntu0.16.04.21"}]}],"versions":["2:4.1.17+dfsg-4ubuntu2","2:4.1.20+dfsg-1ubuntu1","2:4.1.20+dfsg-1ubuntu2","2:4.1.20+dfsg-1ubuntu3","2:4.1.20+dfsg-1ubuntu5","2:4.3.3+dfsg-1ubuntu1","2:4.3.3+dfsg-1ubuntu2","2:4.3.3+dfsg-1ubuntu3","2:4.3.6+dfsg-1ubuntu1","2:4.3.8+dfsg-0ubuntu1","2:4.3.9+dfsg-0ubuntu0.16.04.1","2:4.3.9+dfsg-0ubuntu0.16.04.2","2:4.3.9+dfsg-0ubuntu0.16.04.3","2:4.3.11+dfsg-0ubuntu0.16.04.1","2:4.3.11+dfsg-0ubuntu0.16.04.3","2:4.3.11+dfsg-0ubuntu0.16.04.5","2:4.3.11+dfsg-0ubuntu0.16.04.6","2:4.3.11+dfsg-0ubuntu0.16.04.7","2:4.3.11+dfsg-0ubuntu0.16.04.8","2:4.3.11+dfsg-0ubuntu0.16.04.9","2:4.3.11+dfsg-0ubuntu0.16.04.10","2:4.3.11+dfsg-0ubuntu0.16.04.11","2:4.3.11+dfsg-0ubuntu0.16.04.12","2:4.3.11+dfsg-0ubuntu0.16.04.13","2:4.3.11+dfsg-0ubuntu0.16.04.15","2:4.3.11+dfsg-0ubuntu0.16.04.16","2:4.3.11+dfsg-0ubuntu0.16.04.17","2:4.3.11+dfsg-0ubuntu0.16.04.18","2:4.3.11+dfsg-0ubuntu0.16.04.19","2:4.3.11+dfsg-0ubuntu0.16.04.20"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ctdb","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21","binary_name":"libnss-winbind"},{"binary_name":"libpam-winbind","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"libparse-pidl-perl","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"libsmbclient","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"libwbclient0","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"python-samba","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21","binary_name":"registry-tools"},{"binary_name":"samba","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"samba-common","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"samba-common-bin","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"samba-dsdb-modules","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"samba-libs","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"samba-testsuite","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"samba-vfs-modules","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"smbclient","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"},{"binary_name":"winbind","binary_version":"2:4.3.11+dfsg-0ubuntu0.16.04.21"}]},"database_specific":{"cves_map":{"cves":[],"ecosystem":"Ubuntu:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3976-3.json"}},{"package":{"name":"samba","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.11?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11","binary_name":"ctdb"},{"binary_name":"libnss-winbind","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"libpam-winbind","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"libparse-pidl-perl","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"libsmbclient","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11","binary_name":"libwbclient0"},{"binary_name":"python-samba","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"registry-tools","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"samba","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"samba-common","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"samba-common-bin","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"samba-dsdb-modules","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"samba-libs","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"samba-testsuite","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"samba-vfs-modules","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"smbclient","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"},{"binary_name":"winbind","binary_version":"2:4.7.6+dfsg~ubuntu-0ubuntu2.11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3976-3.json","cves_map":{"cves":[],"ecosystem":"Ubuntu:18.04:LTS"}}}],"schema_version":"1.7.5"}