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AUSCERT External Security Bulletin Redistribution
ESB-2019.2080.2
USN-4015: DBus vulnerability
13 June 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: dbus
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12749
Original Bulletin:
https://usn.ubuntu.com/4015-1/
https://usn.ubuntu.com/4015-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running dbus check for an updated version of the software for their
operating system.
Revision History: June 13 2019: Added USN-4015-2
June 12 2019: Initial Release
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USN-4015-1: DBus vulnerability
11 June 2019
dbus vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
DBus could allow unintended access to services.
Software Description
o 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
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o CVE-2019-12749
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USN-4015-2: DBus vulnerability
12 June 2019
dbus vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
DBus could allow unintended access to services.
Software Description
o dbus - simple interprocess messaging system
Details
USN-4015-1 fixed a vulnerability in DBus. This update provides the
corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory 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 14.04 ESM
dbus - 1.6.18-0ubuntu4.5+esm1
libdbus-1-3 - 1.6.18-0ubuntu4.5+esm1
Ubuntu 12.04 ESM
dbus - 1.4.18-1ubuntu1.9
libdbus-1-3 - 1.4.18-1ubuntu1.9
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o USN-4015-1
o CVE-2019-12749
- --------------------------END INCLUDED TEXT--------------------
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