QID 198407

Date Published: 2021-06-23

QID 198407: Ubuntu Security Notification for BlueZ vulnerabilities (USN-4989-1)

Bluez incorrectly checked certain permissions when pairing.
Bluez incorrectly handled redundant disconnect mgmt events.
Bluez incorrectly handled certain array indexes.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

a local attacker could possibly use this issue to impersonate devices. (
cve-2020-26558).
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).
A local attacker could use this issue to cause bluez to crash, resulting in a denial of service, or possibly obtain sensitive information.
this issue only affected ubuntu 20.04 lts and ubuntu 20.10. (
cve-2021-3588).

  • CVSS V3 rated as Critical - 8.6 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Refer to Ubuntu advisory: USN-4989-1 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 198407

    CVE-2021-3588 | CVE-2020-26558 | CVE-2020-27153 |
    Software Advisories
    Advisory ID Software Component Link
    USN-4989-1 Ubuntu Linux URL Logo usn.ubuntu.com/4989-1
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