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List: ubuntu-security-announce
Subject: [USN-5244-1] DBus vulnerability
From: Camila Camargo de Matos <camila.camargodematos () canonical ! com>
Date: 2022-01-20 20:25:07
Message-ID: 29531f45-36d6-7c2d-bd1f-a459b9deec37 () canonical ! com
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==========================================================================
Ubuntu Security Notice USN-5244-1
January 20, 2022
dbus vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
Summary:
DBus could be made to crash if it received specially crafted
input.
Software Description:
- dbus: simple interprocess messaging system
Details:
Daniel Onaca discovered that DBus contained a use-after-free vulnerability,
caused by the incorrect handling of usernames sharing the same UID. An
attacker could possibly use this issue to cause DBus to crash, resulting
in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
dbus 1.10.6-1ubuntu3.6+esm1
libdbus-1-3 1.10.6-1ubuntu3.6+esm1
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5244-1
CVE-2020-35512
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