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Debian DLA-2434-1 : gdm3 security update

medium Nessus Plugin ID 142521

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Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that there was an issue in the GNOME Display Manager where not detecting any users may make GDM launch initial system setup and thereby permitting the creation of new users with sudo capabilities.

For Debian 9 'Stretch', this problem has been fixed in version 3.22.3-3+deb9u3.

We recommend that you upgrade your gdm3 packages.

For the detailed security status of gdm3 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/gdm3

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

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

https://lists.debian.org/debian-lts-announce/2020/11/msg00008.html

Plugin Details

Severity: Medium

ID: 142521

File Name: debian_DLA-2434.nasl

Version: 1.4

Type: local

Agent: unix

Published: 11/6/2020

Updated: 2/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2020-16125

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:gir1.2-gdm-1.0, p-cpe:/a:debian:debian_linux:libgdm1, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:gdm3, p-cpe:/a:debian:debian_linux:libgdm-dev

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/5/2020

Vulnerability Publication Date: 11/10/2020

Reference Information

CVE: CVE-2020-16125