Permissions, Privileges, and Access Controls in systemd - CVE-2019-3843

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Main Vulnerability Database Vulnerabilities #VU18435

Permissions, Privileges, and Access Controls in systemd - CVE-2019-3843

Published: May 13, 2019 / Updated: January 29, 2020


Vulnerability identifier: #VU18435
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-3843
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Freedesktop.org
Affected software:
systemd

Detailed vulnerability description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to an error in the process of binary creation, when the DynamicUser property is used to create a SUID or SGID binary for a systemd service. A local user can abuse the systemd functionality to execute arbitrary code on the target system with elevated privileges.


How to mitigate CVE-2019-3843

Install updates from vendor's website.

Sources