CVE-2023-34967

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 80:4.18.6-1.el8 < *unaffected
Red HatRed Hat Enterprise Linux 80:4.18.6-1.el8 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support0:4.15.5-15.el8_6 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Extended Update Support0:4.17.5-5.el8_8 < *unaffected
Red HatRed Hat Enterprise Linux 90:4.18.6-100.el9 < *unaffected
Red HatRed Hat Enterprise Linux 90:4.18.6-100.el9 < *unaffected
Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 80:4.15.5-15.el8_6 < *unaffected

Weaknesses

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

Workarounds

As a possible workaround, disable Spotlight by removing all configuration stanzas ("spotlight=yes|true") that enable Spotlight .

ADP Enrichment

CVE Program Container

Additional References

References