CVE-2023-34967

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

61.2% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-07-20 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-11-06 21:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 61.2% in the next 30 days (EPSS).
• Severity: 5.3 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-07-20 15:15 UTC

Last modified

2026-11-06 21:17 UTC

Exploit probability

61.2% · EPSS, next 30 days

Weakness

CWE-843

Record status

Modified

Affected

• Samba < 4.16.11
• Samba < 4.17.10
• Samba < 4.18.5
• Fedoraproject Fedora 37
• Fedoraproject Fedora 38
• Redhat Enterprise Linux 8.0
• Redhat Enterprise Linux 9.0
• Debian Linux 11.0

Attack profile CVSS 3.1 · 5.3

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-34967.md and follow it. Check whether this project is affected by CVE-2023-34967. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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