Executive Summary

Summary
Title DBus vulnerability
Informations
NameUSN-4015-1First vendor Publication2019-06-11
VendorUbuntuLast vendor Modification2019-06-11
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score3.6Attack RangeLocal
Cvss Impact Score4.9Attack ComplexityLow
Cvss Expoit Score3.9AuthenticationNone 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

%idName
100 %CWE-287Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Os4

Alert History

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