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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-5477-1 samba security update
Debian DSA Debian DSA DSA-5647-1 samba security update
Ubuntu USN Ubuntu USN USN-6238-1 Samba vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

As a possible workaround, disable Spotlight by removing all configuration stanzas ("spotlight=yes|true") that enable Spotlight .

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-11-20T17:29:02.200Z

Reserved: 2023-06-07T21:11:04.261Z

Link: CVE-2023-34967

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-07-20T15:15:11.410

Modified: 2024-11-21T08:07:44.293

Link: CVE-2023-34967

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-07-19T00:00:00Z

Links: CVE-2023-34967 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses