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Debian DSA-4270-1 : gdm3 - security update

high Nessus Plugin ID 111668

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Synopsis

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

Description

Chris Coulson discovered a use-after-free flaw in the GNOME Display Manager, triggerable by an unprivileged user via a specially crafted sequence of D-Bus method calls, leading to denial of service or potentially the execution of arbitrary code.

Solution

Upgrade the gdm3 packages.

For the stable distribution (stretch), this problem has been fixed in version 3.22.3-3+deb9u2.

See Also

https://security-tracker.debian.org/tracker/source-package/gdm3

https://packages.debian.org/source/stretch/gdm3

https://www.debian.org/security/2018/dsa-4270

Plugin Details

Severity: High

ID: 111668

File Name: debian_DSA-4270.nasl

Version: 1.4

Type: local

Agent: unix

Published: 8/14/2018

Updated: 11/13/2018

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, cpe:/o:debian:debian_linux:9.0

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

Patch Publication Date: 8/13/2018

Reference Information

CVE: CVE-2018-14424

DSA: 4270