USN-4989-2

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Source
https://ubuntu.com/security/notices/USN-4989-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4989-2.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-4989-2
Upstream
Related
Published
2021-06-16T14:17:40.037745Z
Modified
2025-10-13T04:35:32Z
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

Affected packages

Ubuntu:Pro:16.04:LTS / bluez

Package

Name
bluez
Purl
pkg:deb/ubuntu/bluez@5.37-0ubuntu5.3+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.37-0ubuntu5.3+esm1

Affected versions

5.*

5.35-0ubuntu2
5.36-0ubuntu1
5.37-0ubuntu5
5.37-0ubuntu5.1
5.37-0ubuntu5.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.37-0ubuntu5.3+esm1",
            "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": "libbluetooth-dev"
        },
        {
            "binary_version": "5.37-0ubuntu5.3+esm1",
            "binary_name": "libbluetooth3"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "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-2020-26558"
        },
        {
            "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": "low",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2020-27153"
        }
    ]
}