CVE-2023-34967

Advisory lineage Upstream: 0 Downstream: 16
Modified
Published: 20 Jul 2023, 14:57
Last modified:20 Nov 2025, 17:29

Vulnerability Summary

Overall Risk (default)
medium
25/100
CVSS Score
5.3 MEDIUM
v3.1 (cve.org)
EPSS Score
19.2% MEDIUM
19% probability -1.97%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Jul 2023, 14:57
Published
Vulnerability first disclosed
20 Nov 2025, 17:29
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Trends

Current EPSS score: 19.20%• Percentile: 95%

Techniques & Countermeasures

  • CWE-843•Access of Resource Using Incompatible Type ('Type Confusion')

    The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Affected Systems

  • debian•debian_linux

    11.0 | 12.0

  • fedoraproject•fedora

    37 | 38

  • redhat•enterprise_linux

    8.0 | 9.0

  • samba•samba

    < 4.16.11 | ≥ 4.17.0, < 4.17.10 | ≥ 4.18.0, < 4.18.5

References (11)