D-Bus: Authentication bypass — GLSA 201909-08

An authentication bypass was discovered in D-Bus.

Affected packages

sys-apps/dbus on all architectures
Affected versions < 1.12.16
Unaffected versions >= 1.12.16

Background

D-Bus is a message bus system which processes can use to talk to each other.

Description

It was discovered that a local attacker could manipulate symbolic links in their own home directory to bypass authentication and connect to a DBusServer with elevated privileges.

Impact

A local attacker can bypass authentication mechanisms and elevate privileges.

Workaround

There is no known workaround at this time.

Resolution

All D-Bus users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.12.16"
 

References

Release date
September 08, 2019

Latest revision
September 08, 2019: 1

Severity
normal

Exploitable
local

Bugzilla entries