Detections
Analytics
Amazon Linux AMI : dbus (ALAS-2019-1246)
high Nessus Plugin ID 127074
Language:
Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
dbus as used in DBusServer, allows cookie spoofing because of symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent client connection came from an attacker-chosen uid, allowing authentication bypass.(CVE-2019-12749)
Solution
Run 'yum update dbus' to update your system.See Also
Plugin Details
Severity: High
ID: 127074
File Name: ala_ALAS-2019-1246.nasl
Version: 1.2
Type: local
Agent: unix
Published: 7/26/2019
Updated: 1/6/2020
Supported Sensors: Frictionless Assessment AWS, 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:amazon:linux:dbus, p-cpe:/a:amazon:linux:dbus-debuginfo, p-cpe:/a:amazon:linux:dbus-devel, p-cpe:/a:amazon:linux:dbus-doc, p-cpe:/a:amazon:linux:dbus-libs, cpe:/o:amazon:linux
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/25/2019
Vulnerability Publication Date: 6/11/2019
Reference Information
CVE: CVE-2019-12749
ALAS: 2019-1246