Access of Resource Using Incompatible Type ('Type Confusion') Affecting samba package, versions [,4.16.11)[4.17.0,4.17.10)[4.18.0,4.18.5)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-SAMBA-5798520
- published21 Jul 2023
- disclosed19 Jul 2023
- creditFlorent Saudel, Arnaud Gatignolof
Introduced: 19 Jul 2023
CVE-2023-34967 (opens in a new tab)How to fix?
Upgrade samba to version 4.16.11, 4.17.10, 4.18.5 or higher.
Overview
Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type ('Type Confusion'). 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.