Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2014.1072
dbus security update
3 July 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: dbus
Publisher: Debian
Operating System: Debian GNU/Linux 7
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3533 CVE-2014-3532 CVE-2014-3477
Original Bulletin:
http://www.debian.org/security/2014/dsa-2971
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running dbus check for an updated version of the software for their
operating system.
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Debian Security Advisory DSA-2971-1 security@debian.org
http://www.debian.org/security/ Salvatore Bonaccorso
July 02, 2014 http://www.debian.org/security/faq
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Package : dbus
CVE ID : CVE-2014-3477 CVE-2014-3532 CVE-2014-3533
Several vulnerabilities have been discovered in dbus, an asynchronous
inter-process communication system. The Common Vulnerabilities and
Exposures project identifies the following problems:
CVE-2014-3477
Alban Crequy at Collabora Ltd. discovered that dbus-daemon sends an
AccessDenied error to the service instead of a client when the
client is prohibited from accessing the service. A local attacker
could use this flaw to cause a bus-activated service that is not
currently running to attempt to start, and fail, denying other users
access to this service.
CVE-2014-3532
Alban Crequy at Collabora Ltd. discovered a bug in dbus-daemon's
support for file descriptor passing. A malicious process could force
system services or user applications to be disconnected from the
D-Bus system by sending them a message containing a file descriptor,
leading to a denial of service.
CVE-2014-3533
Alban Crequy at Collabora Ltd. and Alejandro Martinez Suarez
discovered that a malicious process could force services to be
disconnected from the D-Bus system by causing dbus-daemon to attempt
to forward invalid file descriptors to a victim process, leading to
a denial of service.
For the stable distribution (wheezy), these problems have been fixed in
version 1.6.8-1+deb7u3.
For the unstable distribution (sid), these problems have been fixed in
version 1.8.6-1.
We recommend that you upgrade your dbus packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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