CVE-2023-34967
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.
How to fix CVE-2023-34967
To remediate CVE-2023-34967, upgrade the affected package to a fixed version below.
- —upgrade to 2:4.13.13+dfsg-1~deb11u6 or later
Is CVE-2023-34967 being exploited?
Moderate — EPSS is 19.2%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 2:4.13.13+dfsg-1~deb11u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |