Debian DSA-4428-1 : systemd - security update

high Nessus Plugin ID 123836

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Synopsis

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

Description

Jann Horn discovered that the PAM module in systemd insecurely uses the environment and lacks seat verification permitting spoofing an active session to PolicyKit. A remote attacker with SSH access can take advantage of this issue to gain PolicyKit privileges that are normally only granted to clients in an active session on the local console.

Solution

Upgrade the systemd packages.

For the stable distribution (stretch), this problem has been fixed in version 232-25+deb9u11.

This update includes updates previously scheduled to be released in the stretch 9.9 point release.

Plugin Details

Severity: High

ID: 123836

File Name: debian_DSA-4428.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 4/9/2019

Updated: 4/30/2019

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.4

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

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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:systemd, cpe:/o:debian:debian_linux:9.0

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: 4/8/2019

Vulnerability Publication Date: 4/9/2019

Reference Information

CVE: CVE-2019-3842

DSA: 4428

Detections

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