public inbox for gentoo-announce@lists.gentoo.org
 help / color / mirror / Atom feed
From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Subject: [gentoo-announce] [ GLSA 201701-20 ] D-Bus: Format string vulnerability
Date: Wed, 11 Jan 2017 21:08:46 +0900	[thread overview]
Message-ID: <d08fe11e-fc69-e443-5f1e-830e84b1eda6@gentoo.org> (raw)


[-- Attachment #1.1.1: Type: text/plain, Size: 2914 bytes --]

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 201701-20
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                           https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Severity: Normal
    Title: D-Bus: Format string vulnerability
     Date: January 11, 2017
     Bugs: #596772
       ID: 201701-20

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A vulnerability has been found in D-Bus possibly resulting in a local
Denial of Service.

Background
==========

D-Bus is a message bus system, a simple way for applications to talk to
one another.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-apps/dbus               < 1.10.12                 >= 1.10.12 

Description
===========

It was discovered that D-Bus incorrectly handles certain format
strings.

The impact of this new vulnerability is believed to not be exploitable
if D-Bus is patched against CVE-2015-0245. The previous vulnerability
(CVE-2015-0245) was addressed in GLSA-201503-02 referenced below.

Impact
======

A local attacker could cause a Denial of Service condition or possibly
execute arbitrary code.

Workaround
==========

The vulnerable D-Bus interface is intended only for use by systemd
running as root.

The administrator can install a policy which denies sending from 
org.freedesktop.systemd1.Activator" to D-Bus. This will prevent
non-root attackers from reaching the interface in order to exercise
this flaw.

Resolution
==========

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

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.10.12"

References
==========

[ 1 ] GLSA-201503-02
      https://security.gentoo.org/glsa/201503-02

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/201701-20

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2017 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


[-- Attachment #1.1.2: Type: text/html, Size: 4008 bytes --]

[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 949 bytes --]

                 reply	other threads:[~2017-01-11 12:49 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=d08fe11e-fc69-e443-5f1e-830e84b1eda6@gentoo.org \
    --to=bman@gentoo.org \
    --cc=gentoo-announce@lists.gentoo.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox