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Sicherheit: Denial of Service in D-BUS
Aktuelle Meldungen Distributionen
Name: Denial of Service in D-BUS
ID: USN-3116-1
Distribution: Ubuntu
Plattformen: Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 16.10
Datum: Di, 1. November 2016, 20:40
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0245

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
<ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <66241ef5-d3cc-bd7d-d392-365cb5f50672@canonical.com>
Subject: [USN-3116-1] DBus vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-3116-1
November 01, 2016

dbus vulnerabilities
==========================================================================

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

- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in DBus.

Software Description:
- dbus: simple interprocess messaging system

Details:

It was discovered that DBus incorrectly validated the source of
ActivationFailure signals. A local attacker could use this issue to cause a
denial of service. This issue only applied to Ubuntu 12.04 LTS and Ubuntu
14.04 LTS. (CVE-2015-0245)

It was discovered that DBus incorrectly handled certain format strings. A
local attacker could use this issue to cause a denial of service, or
possibly execute arbitrary code. This issue is only exposed to unprivileged
users when the fix for CVE-2015-0245 is not applied, hence this issue is
only likely to affect Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. Ubuntu 16.04
LTS and Ubuntu 16.10 have been updated as a preventative measure in the
event that a new attack vector for this issue is discovered.
(No CVE number)

Update instructions:

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

Ubuntu 16.10:
dbus 1.10.10-1ubuntu1.1
libdbus-1-3 1.10.10-1ubuntu1.1

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

Ubuntu 14.04 LTS:
dbus 1.6.18-0ubuntu4.4
libdbus-1-3 1.6.18-0ubuntu4.4

Ubuntu 12.04 LTS:
dbus 1.4.18-1ubuntu1.8
libdbus-1-3 1.4.18-1ubuntu1.8

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

References:
http://www.ubuntu.com/usn/usn-3116-1
CVE-2015-0245

Package Information:
https://launchpad.net/ubuntu/+source/dbus/1.10.10-1ubuntu1.1
https://launchpad.net/ubuntu/+source/dbus/1.10.6-1ubuntu3.1
https://launchpad.net/ubuntu/+source/dbus/1.6.18-0ubuntu4.4
https://launchpad.net/ubuntu/+source/dbus/1.4.18-1ubuntu1.8



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