FKIE_CVE-2023-34967

Vulnerability from fkie_nvd - Published: 2023-07-20 15:15 - Updated: 2026-06-17 06:04
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:6667Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7139Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0423
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0580
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-34967Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2222794Issue Tracking
secalert@redhat.comhttps://www.samba.org/samba/security/CVE-2023-34967.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:6667Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:7139Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0423
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0580
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-34967Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2222794Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230731-0010/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5477
af854a3a-2127-422b-91ae-364da2661108https://www.samba.org/samba/security/CVE-2023-34967.htmlVendor Advisory
Impacted products
Vendor Product Version
samba samba *
samba samba *
samba samba *
fedoraproject fedora 37
fedoraproject fedora 38
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
debian debian_linux 11.0
debian debian_linux 12.0
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Type Confusion vulnerability was found in Samba\u0027s 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."
    }
  ],
  "id": "CVE-2023-34967",
  "lastModified": "2026-06-17T06:04:10.683",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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          "confidentialityImpact": "NONE",
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          "userInteraction": "NONE",
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  "published": "2023-07-20T15:15:11.410",
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-843"
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      "source": "nvd@nist.gov",
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  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.