Debian DLA-1494-1 : gdm3 security update

high Nessus Plugin ID 117295

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Synopsis

The remote Debian host is missing a security update.

Description

The daemon in GDM does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.

For Debian 8 'Jessie', this problem has been fixed in version 3.14.1-7+deb8u1.

We recommend that you upgrade your gdm3 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.

Plugin Details

Severity: High

ID: 117295

File Name: debian_DLA-1494.nasl

Version: 1.4

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/6/2018

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

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

CVSS v3

Risk Factor: High

Base Score: 7.8

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:gdm3, p-cpe:/a:debian:debian_linux:gir1.2-gdm3, p-cpe:/a:debian:debian_linux:libgdm-dev, p-cpe:/a:debian:debian_linux:libgdm1, cpe:/o:debian:debian_linux:8.0

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

Patch Publication Date: 9/5/2018

Reference Information

CVE: CVE-2018-14424

Detections

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