usn-4989-2
Vulnerability from osv_ubuntu
Published
2021-06-16 14:17
Modified
2026-06-25 10:46
Summary
bluez vulnerabilities
Details

USN-4989-1 fixed several vulnerabilities in BlueZ. This update provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that BlueZ incorrectly checked certain permissions when pairing. A local attacker could possibly use this issue to impersonate devices. (CVE-2020-26558)

Jay LV discovered that BlueZ incorrectly handled redundant disconnect MGMT events. A local attacker could use this issue to cause BlueZ to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-27153)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-26558",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27153",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "bluetooth",
            "binary_version": "5.37-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "bluez",
            "binary_version": "5.37-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "bluez-cups",
            "binary_version": "5.37-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "bluez-hcidump",
            "binary_version": "5.37-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "bluez-obexd",
            "binary_version": "5.37-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "bluez-tests",
            "binary_version": "5.37-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "libbluetooth3",
            "binary_version": "5.37-0ubuntu5.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "bluez",
        "purl": "pkg:deb/ubuntu/bluez@5.37-0ubuntu5.3+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.37-0ubuntu5.3+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.35-0ubuntu2",
        "5.36-0ubuntu1",
        "5.37-0ubuntu5",
        "5.37-0ubuntu5.1",
        "5.37-0ubuntu5.3"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-4989-1 fixed several vulnerabilities in BlueZ. This update provides\nthe corresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that BlueZ incorrectly checked certain permissions when\n pairing. A local attacker could possibly use this issue to impersonate\n devices. (CVE-2020-26558)\n\n Jay LV discovered that BlueZ incorrectly handled redundant disconnect MGMT\n events. A local attacker could use this issue to cause BlueZ to crash,\n resulting in a denial of service, or possibly execute arbitrary code. This\n issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-27153)\n",
  "id": "USN-4989-2",
  "modified": "2026-06-25T10:46:00Z",
  "published": "2021-06-16T14:17:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4989-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-26558"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27153"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "bluez vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-26558",
    "UBUNTU-CVE-2020-27153"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.