CVE-2023-34967

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.

• CWE-843
• CWE-843

• https://access.redhat.com/errata/RHSA-2023:6667Third Party Advisory
• https://access.redhat.com/errata/RHSA-2023:7139Third Party Advisory
• https://access.redhat.com/errata/RHSA-2024:0423
• https://access.redhat.com/errata/RHSA-2024:0580
• https://access.redhat.com/security/cve/CVE-2023-34967Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2222794Issue Tracking
• https://www.samba.org/samba/security/CVE-2023-34967.htmlVendor Advisory
• https://access.redhat.com/errata/RHSA-2023:6667Third Party Advisory
• https://access.redhat.com/errata/RHSA-2023:7139Third Party Advisory
• https://access.redhat.com/errata/RHSA-2024:0423
• https://access.redhat.com/errata/RHSA-2024:0580
• https://access.redhat.com/security/cve/CVE-2023-34967Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2222794Issue Tracking
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/
• https://security.netapp.com/advisory/ntap-20230731-0010/
• https://www.debian.org/security/2023/dsa-5477
• https://www.samba.org/samba/security/CVE-2023-34967.htmlVendor Advisory

Published

Jul 20, 2023

Last Modified

Jun 17, 2026

Status

Modified

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