{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "* SECURITY UPDATE: out-of-bounds write via an unsupported AVRCP event\n     - debian/patches/CVE-2023-27349.patch: reject an event id above\n       AVRCP_EVENT_LAST in avrcp_handle_event() before it is used to index\n       session->transaction_events, a 14-entry array (upstream f54299a850).\n     - CVE-2023-27349",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788176031",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788176031"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu18.04els/advisories/2026/clsa-2026_1788176031.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-08-31T11:34:36Z",
      "generator": {
        "date": "2026-08-31T11:34:36Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1788176031",
      "initial_release_date": "2026-08-31T11:34:36Z",
      "revision_history": [
        {
          "date": "2026-08-31T11:34:36Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "Fix CVE(s): CVE-2023-27349"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Ubuntu 18.04",
                "product": {
                  "name": "Ubuntu 18.04",
                  "product_id": "Ubuntu-18",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Ubuntu"
          }
        ],
        "category": "vendor",
        "name": "Canonical Ltd."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                "product": {
                  "name": "bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_id": "bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/bluez-obexd@5.48-0ubuntu3.9%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                "product": {
                  "name": "bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_id": "bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/bluez-cups@5.48-0ubuntu3.9%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                "product": {
                  "name": "bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_id": "bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/bluez@5.48-0ubuntu3.9%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                "product": {
                  "name": "bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_id": "bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/bluez-hcidump@5.48-0ubuntu3.9%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                "product": {
                  "name": "libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_id": "libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/libbluetooth3@5.48-0ubuntu3.9%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                "product": {
                  "name": "bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_id": "bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/bluez-tests@5.48-0ubuntu3.9%2Btuxcare.els1?arch=amd64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                "product": {
                  "name": "libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_id": "libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/libbluetooth-dev@5.48-0ubuntu3.9%2Btuxcare.els1?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all",
                "product": {
                  "name": "bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all",
                  "product_id": "bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/bluetooth@5.48-0ubuntu3.9%2Btuxcare.els1?arch=all"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "all"
          }
        ],
        "category": "vendor",
        "name": "CloudLinux"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        },
        "product_reference": "bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        },
        "product_reference": "bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        },
        "product_reference": "bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        },
        "product_reference": "bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all"
        },
        "product_reference": "bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        },
        "product_reference": "libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        },
        "product_reference": "bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64 as a component of Ubuntu 18.04",
          "product_id": "Ubuntu-18:libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        },
        "product_reference": "libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-18"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-27349",
      "cwe": {
        "id": "CWE-129",
        "name": "Improper Validation of Array Index"
      },
      "notes": [
        {
          "category": "description",
          "text": "BlueZ Audio Profile AVRCP Improper Validation of Array Index Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code via Bluetooth on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious device.\n\nThe specific flaw exists within the handling of the AVRCP protocol. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-19908.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Ubuntu-18:bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all",
          "Ubuntu-18:bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
          "Ubuntu-18:bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
          "Ubuntu-18:bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
          "Ubuntu-18:bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
          "Ubuntu-18:bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
          "Ubuntu-18:libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
          "Ubuntu-18:libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2023-27349"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=f54299a850676d92c3dafd83e9174fcfe420ccc9",
          "url": "https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=f54299a850676d92c3dafd83e9174fcfe420ccc9"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2024/05/msg00015.html",
          "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00015.html"
        },
        {
          "category": "external",
          "summary": "https://www.zerodayinitiative.com/advisories/ZDI-23-386/",
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-386/"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html",
          "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00022.html"
        }
      ],
      "release_date": "2024-05-03T02:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-08-31T11:33:53.294234Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1788176031",
          "product_ids": [
            "Ubuntu-18:bluetooth-0:5.48-0ubuntu3.9+tuxcare.els1.all",
            "Ubuntu-18:bluez-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
            "Ubuntu-18:bluez-cups-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
            "Ubuntu-18:bluez-hcidump-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
            "Ubuntu-18:bluez-obexd-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
            "Ubuntu-18:bluez-tests-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
            "Ubuntu-18:libbluetooth-dev-0:5.48-0ubuntu3.9+tuxcare.els1.amd64",
            "Ubuntu-18:libbluetooth3-0:5.48-0ubuntu3.9+tuxcare.els1.amd64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788176031"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}