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Debian Security Advisory 2971-1

Debian Security Advisory 2971-1
Posted Jul 3, 2014
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2971-1 - Several vulnerabilities have been discovered in dbus, an asynchronous inter-process communication system.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2014-3477, CVE-2014-3532, CVE-2014-3533
SHA-256 | 46d08526473773f87668e1f1cd03da3d6c75576a6703d2e23cdde5de35d4ff1f

Debian Security Advisory 2971-1

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

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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