Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | < 4.16.11 |
| Fedoraproject | Fedora | 37 |
| Redhat | Enterprise Linux | 8.0 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- 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/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
FAQ
What is CVE-2023-34967?
CVE-2023-34967 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ke...
How severe is CVE-2023-34967?
CVE-2023-34967 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-34967?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba, Fedoraproject Fedora, Redhat Enterprise Linux, Debian Debian Linux.