ubuntu-cve-2023-34967
Vulnerability from osv_ubuntu
Published
2023-07-19 00:00
Modified
2026-04-22 07:45
Summary
Details

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.

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
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu0.20.04.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.10.7+dfsg-0ubuntu2",
        "2:4.10.7+dfsg-0ubuntu3",
        "2:4.11.1+dfsg-3ubuntu1",
        "2:4.11.1+dfsg-3ubuntu2",
        "2:4.11.1+dfsg-3ubuntu4",
        "2:4.11.5+dfsg-1ubuntu1",
        "2:4.11.5+dfsg-1ubuntu2",
        "2:4.11.6+dfsg-0ubuntu1",
        "2:4.11.6+dfsg-0ubuntu1.1",
        "2:4.11.6+dfsg-0ubuntu1.2",
        "2:4.11.6+dfsg-0ubuntu1.3",
        "2:4.11.6+dfsg-0ubuntu1.4",
        "2:4.11.6+dfsg-0ubuntu1.5",
        "2:4.11.6+dfsg-0ubuntu1.6",
        "2:4.11.6+dfsg-0ubuntu1.8",
        "2:4.11.6+dfsg-0ubuntu1.9",
        "2:4.11.6+dfsg-0ubuntu1.10",
        "2:4.13.14+dfsg-0ubuntu0.20.04.1",
        "2:4.13.14+dfsg-0ubuntu0.20.04.2",
        "2:4.13.14+dfsg-0ubuntu0.20.04.3",
        "2:4.13.14+dfsg-0ubuntu0.20.04.4",
        "2:4.13.17~dfsg-0ubuntu0.21.04.1",
        "2:4.13.17~dfsg-0ubuntu0.21.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.1",
        "2:4.13.17~dfsg-0ubuntu1.20.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.4",
        "2:4.13.17~dfsg-0ubuntu1.20.04.5",
        "2:4.15.13+dfsg-0ubuntu0.20.04.1",
        "2:4.15.13+dfsg-0ubuntu0.20.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu1.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.13.5+dfsg-2ubuntu2",
        "2:4.13.5+dfsg-2ubuntu3",
        "2:4.13.14+dfsg-0ubuntu1",
        "2:4.13.14+dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu1",
        "2:4.15.5~dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu4",
        "2:4.15.5~dfsg-0ubuntu5",
        "2:4.15.5~dfsg-0ubuntu5.1",
        "2:4.15.9+dfsg-0ubuntu0.2",
        "2:4.15.9+dfsg-0ubuntu0.3",
        "2:4.15.13+dfsg-0ubuntu1",
        "2:4.15.13+dfsg-0ubuntu1.1"
      ]
    }
  ],
  "aliases": [],
  "details": "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": "UBUNTU-CVE-2023-34967",
  "modified": "2026-04-22T07:45:22Z",
  "published": "2023-07-19T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-34967"
    },
    {
      "type": "REPORT",
      "url": "https://www.samba.org/samba/security/CVE-2023-34967.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6238-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-34967"
    }
  ],
  "related": [
    "USN-6238-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-34967"
  ]
}



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