SB2021061715 - Multiple vulnerabilities in BlueZ

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Main Vulnerability Database SB2021061715

SB2021061715 - Multiple vulnerabilities in BlueZ

Published: June 17, 2021 Updated: January 26, 2022

Security Bulletin ID SB2021061715
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Adjecent network
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Security features bypass (CVE-ID: CVE-2020-26558)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to an impersonation in the Passkey Entry protocol flaw. A remote attacker on the local network can perform a man-in-the-middle (MITM) attack and impersonate the initiating device without any previous knowledge.

Note: This vulnerability affects the following specifications:

  • BR/EDR Secure Simple Pairing in Bluetooth Core Specifications 2.1 through 5.2
  • BR/EDR Secure Connections Pairing in Bluetooth Core Specifications 4.1 through 5.2 
  • LE Secure Connections Pairing in Bluetooth Core Specifications 4.2 through 5.2


2) Improper access control (CVE-ID: CVE-2021-0129)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote authenticated attacker on the local network can bypass implemented security restrictions and enable information disclosure


Remediation

Install update from vendor's website.

References