Debian DSA-2971-1 : dbus - security update

low Nessus Plugin ID 76349

Synopsis

The remote Debian host is missing a security-related update.

Description

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.

Solution

Upgrade the dbus packages.

For the stable distribution (wheezy), these problems have been fixed in version 1.6.8-1+deb7u3.

See Also

https://security-tracker.debian.org/tracker/CVE-2014-3477

https://security-tracker.debian.org/tracker/CVE-2014-3532

https://security-tracker.debian.org/tracker/CVE-2014-3533

https://packages.debian.org/source/wheezy/dbus

https://www.debian.org/security/2014/dsa-2971

Plugin Details

Severity: Low

ID: 76349

File Name: debian_DSA-2971.nasl

Version: 1.9

Type: local

Agent: unix

Published: 7/3/2014

Updated: 1/11/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:7.0, p-cpe:/a:debian:debian_linux:dbus

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 7/2/2014

Reference Information

CVE: CVE-2014-3477, CVE-2014-3532, CVE-2014-3533

BID: 67986, 68337, 68339

DSA: 2971