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CVE-2020-0556

Publication date 12 March 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.1 · High

Score breakdown

Improper access control in subsystem for BlueZ before version 5.54 may allow an unauthenticated user to potentially enable escalation of privilege and denial of service via adjacent access

Read the notes from the security team

Status

Package Ubuntu Release Status
bluez 19.10 eoan
Fixed 5.50-0ubuntu5.1
18.04 LTS bionic
Fixed 5.48-0ubuntu3.4
16.04 LTS xenial
Fixed 5.37-0ubuntu5.3
14.04 LTS trusty Not in release

Notes

alexmurray

Affects versions before 5.53 according to the Intel advisory

mdeslaur

while the Intel advisory says "below 5.53", the commits that actually fix the issue appear to have been added after 5.53 was released. Marking focal as needed until further information is available. Intel advisory was updates on 2020-03-16 to change fixed version to 5.54.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
bluez

Severity score breakdown

Parameter Value
Base score 7.1 · High
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L