Debian DSA-4783-1 : sddm - security update

medium Nessus Plugin ID 142513

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Synopsis

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

Description

Fabian Vogt discovered a flaw in sddm, a modern display manager for X11. A local attacker can take advantage of a race condition when creating the Xauthority file to escalate privileges.

Solution

Upgrade the sddm packages.

For the stable distribution (buster), this problem has been fixed in version 0.18.0-1+deb10u1.

Plugin Details

Severity: Medium

ID: 142513

File Name: debian_DSA-4783.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 11/6/2020

Updated: 2/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.6

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

CVSS Score Source: CVE-2020-28049

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:sddm

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: 11/4/2020

Reference Information

CVE: CVE-2020-28049

DSA: 4783

Detections

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