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Debian DLA-1818-1 : dbus security update

high Nessus Plugin ID 125926

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Synopsis

The remote Debian host is missing a security update.

Description

Joe Vennix discovered an authentication bypass vulnerability in dbus, an asynchronous inter-process communication system. The implementation of the DBUS_COOKIE_SHA1 authentication mechanism was susceptible to a symbolic link attack. A local attacker could take advantage of this flaw to bypass authentication and connect to a DBusServer with elevated privileges.

For Debian 8 'Jessie', this problem has been fixed in version 1.8.22-0+deb8u2.

We recommend that you upgrade your dbus packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2019/06/msg00005.html

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

Plugin Details

Severity: High

ID: 125926

File Name: debian_DLA-1818.nasl

Version: 1.4

Type: local

Agent: unix

Published: 6/17/2019

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

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

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:dbus, p-cpe:/a:debian:debian_linux:dbus-1-dbg, p-cpe:/a:debian:debian_linux:dbus-1-doc, p-cpe:/a:debian:debian_linux:dbus-udeb, p-cpe:/a:debian:debian_linux:dbus-x11, p-cpe:/a:debian:debian_linux:libdbus-1-3, p-cpe:/a:debian:debian_linux:libdbus-1-3-udeb, p-cpe:/a:debian:debian_linux:libdbus-1-dev, cpe:/o:debian:debian_linux:8.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/14/2019

Vulnerability Publication Date: 6/11/2019

Reference Information

CVE: CVE-2019-12749