Debian Long Term Support / LTS Security Information / 2019 / Security Information -- DLA-1818-1 dbus

Debian Security Advisory

DLA-1818-1 dbus -- LTS security update

Date Reported:

14 Jun 2019

Affected Packages:

dbus

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 930375.
In Mitre's CVE dictionary: CVE-2019-12749.

More information:

Joe Vennix discovered an authentication bypass vulnerability in dbus, an asynchronous inter-process communication system. The implementation of the DBUS_COOKIE_SHA1 authentication mechanism was susceptible to a symbolic link attack. A local attacker could take advantage of this flaw to bypass authentication and connect to a DBusServer with elevated privileges.

For Debian 8 Jessie, this problem has been fixed in version 1.8.22-0+deb8u2.

We recommend that you upgrade your dbus packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS