Executive Summary

Summary
Title bluez security update
Informations
Name DSA-4647 First vendor Publication 2020-03-26
Vendor Debian Last vendor Modification 2020-03-26
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Overall CVSS Score 7.1
Base Score 7.1 Environmental Score 7.1
impact SubScore 3.7 Temporal Score 7.1
Exploitabality Sub Score 2.8
 
Attack Vector Adjacent Attack Complexity Low
Privileges Required None User Interaction None
Scope Changed Confidentiality Impact Low
Integrity Impact Low Availability Impact Low
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:A/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 5.8 Attack Range Adjacent network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 6.5 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

It was reported that the BlueZ's HID and HOGP profile implementations don't specifically require bonding between the device and the host. Malicious devices can take advantage of this flaw to connect to a target host and impersonate an existing HID device without security or to cause an SDP or GATT service discovery to take place which would allow HID reports to be injected to the input subsystem from a non-bonded source.

For the HID profile an new configuration option (ClassicBondedOnly) is introduced to make sure that input connections only come from bonded device connections. The options defaults to 'false' to maximize device compatibility.

For the oldstable distribution (stretch), this problem has been fixed in version 5.43-2+deb9u2.

For the stable distribution (buster), this problem has been fixed in version 5.50-1.2~deb10u1.

We recommend that you upgrade your bluez packages.

For the detailed security status of bluez please refer to its security tracker page at: https://security-tracker.debian.org/tracker/bluez

Original Source

Url : http://www.debian.org/security/2020/dsa-4647

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-269 Improper Privilege Management

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8
Os 3
Os 2
Os 1

Alert History

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0
1
Date Informations
2020-05-23 13:03:43
  • Multiple Updates
2020-03-27 00:17:38
  • First insertion