{"id":"UBUNTU-CVE-2023-34967","details":"A Type Confusion vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the mdssvc protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a caller may trigger a crash in talloc_get_size() when talloc detects that the passed-in pointer is not a valid talloc pointer. With an RPC worker process shared among multiple client connections, a malicious client or attacker can trigger a process crash in a shared RPC mdssvc worker process, affecting all other clients this worker serves.","modified":"2026-02-04T03:39:31.261754Z","published":"2023-07-19T00:00:00Z","related":["USN-6238-1"],"upstream":["CVE-2023-34967"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-34967"},{"type":"REPORT","url":"https://www.samba.org/samba/security/CVE-2023-34967.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6238-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-34967"}],"affected":[{"package":{"name":"samba","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu0.20.04.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.15.13+dfsg-0ubuntu0.20.04.3"}]}],"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","2:4.11.6+dfsg-0ubuntu1.3","2:4.11.6+dfsg-0ubuntu1.4","2:4.11.6+dfsg-0ubuntu1.5","2:4.11.6+dfsg-0ubuntu1.6","2:4.11.6+dfsg-0ubuntu1.8","2:4.11.6+dfsg-0ubuntu1.9","2:4.11.6+dfsg-0ubuntu1.10","2:4.13.14+dfsg-0ubuntu0.20.04.1","2:4.13.14+dfsg-0ubuntu0.20.04.2","2:4.13.14+dfsg-0ubuntu0.20.04.3","2:4.13.14+dfsg-0ubuntu0.20.04.4","2:4.13.17~dfsg-0ubuntu0.21.04.1","2:4.13.17~dfsg-0ubuntu0.21.04.2","2:4.13.17~dfsg-0ubuntu1.20.04.1","2:4.13.17~dfsg-0ubuntu1.20.04.2","2:4.13.17~dfsg-0ubuntu1.20.04.4","2:4.13.17~dfsg-0ubuntu1.20.04.5","2:4.15.13+dfsg-0ubuntu0.20.04.1","2:4.15.13+dfsg-0ubuntu0.20.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"ctdb","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"libnss-winbind","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"libpam-winbind","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"libsmbclient","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"libsmbclient-dev","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"libwbclient-dev","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"libwbclient0","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"python3-samba","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"registry-tools","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba-common","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba-common-bin","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba-dev","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba-dsdb-modules","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba-libs","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba-testsuite","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"samba-vfs-modules","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"smbclient","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"},{"binary_name":"winbind","binary_version":"2:4.15.13+dfsg-0ubuntu0.20.04.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-34967.json"}},{"package":{"name":"samba","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu1.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.15.13+dfsg-0ubuntu1.2"}]}],"versions":["2:4.13.5+dfsg-2ubuntu2","2:4.13.5+dfsg-2ubuntu3","2:4.13.14+dfsg-0ubuntu1","2:4.13.14+dfsg-0ubuntu2","2:4.15.5~dfsg-0ubuntu1","2:4.15.5~dfsg-0ubuntu2","2:4.15.5~dfsg-0ubuntu4","2:4.15.5~dfsg-0ubuntu5","2:4.15.5~dfsg-0ubuntu5.1","2:4.15.9+dfsg-0ubuntu0.2","2:4.15.9+dfsg-0ubuntu0.3","2:4.15.13+dfsg-0ubuntu1","2:4.15.13+dfsg-0ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"ctdb","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"libnss-winbind","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"libpam-winbind","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"libsmbclient","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"libsmbclient-dev","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"libwbclient-dev","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"libwbclient0","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"python3-samba","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"registry-tools","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba-common","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba-common-bin","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba-dev","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba-dsdb-modules","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba-libs","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba-testsuite","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"samba-vfs-modules","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"smbclient","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"},{"binary_name":"winbind","binary_version":"2:4.15.13+dfsg-0ubuntu1.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-34967.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:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}