Executive Summary

Summary
Title DBus vulnerability
Informations
Name USN-4015-1 First vendor Publication 2019-06-11
Vendor Ubuntu Last vendor Modification 2019-06-11
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score 3.6 Attack Range Local
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

Summary:

DBus could allow unintended access to services.

Software Description: - dbus: simple interprocess messaging system

Details:

Joe Vennix discovered that DBus incorrectly handled DBUS_COOKIE_SHA1 authentication. A local attacker could possibly use this issue to bypass authentication and connect to DBus servers with elevated privileges.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04:
dbus 1.12.12-1ubuntu1.1
libdbus-1-3 1.12.12-1ubuntu1.1

Ubuntu 18.10:
dbus 1.12.10-1ubuntu2.1
libdbus-1-3 1.12.10-1ubuntu2.1

Ubuntu 18.04 LTS:
dbus 1.12.2-1ubuntu1.1
libdbus-1-3 1.12.2-1ubuntu1.1

Ubuntu 16.04 LTS:
dbus 1.10.6-1ubuntu3.4
libdbus-1-3 1.10.6-1ubuntu3.4

After a standard system update you need to reboot your computer to make all the necessary changes.

References:
https://usn.ubuntu.com/4015-1
CVE-2019-12749

Package Information:
https://launchpad.net/ubuntu/+source/dbus/1.12.12-1ubuntu1.1
https://launchpad.net/ubuntu/+source/dbus/1.12.10-1ubuntu2.1
https://launchpad.net/ubuntu/+source/dbus/1.12.2-1ubuntu1.1
https://launchpad.net/ubuntu/+source/dbus/1.10.6-1ubuntu3.4

Original Source

Url : http://www.ubuntu.com/usn/USN-4015-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-59 Improper Link Resolution Before File Access ('Link Following')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 122
Os 4

Alert History

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0
1
2
Date Informations
2019-06-12 21:21:51
  • Multiple Updates
2019-06-11 21:21:58
  • Multiple Updates
2019-06-11 21:18:52
  • First insertion