PT-2019-6160 · Systemd+6 · Systemd+6

Jann Horn · Published 2019-04-19 · Updated 2024-06-15 · CVE-2019-3843

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions systemd (affected versions not specified)

Description The issue is related to a systemd service that utilizes the DynamicUser property, which can lead to the creation of a SUID/SGID binary. This binary can run as the transient service UID/GID even after the service has been terminated, potentially allowing a local attacker to access resources that will be owned by a different service in the future when the UID/GID is recycled. The vulnerability is associated with incorrect privilege assignment and can be exploited to gain access to confidential data, compromise data integrity, and cause a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Incorrect Privilege Assignment

Improper Privilege Management

Weakness Enumeration

CWE-266

CWE-269

Related Identifiers

ALT-PU-2019-1690

BDU:2022-00318

CESA-2020_1794

CVE-2019-3843

OPENSUSE-SU-2024:11420-1

RHSA-2020:1794

RHSA-2020_1794

SUSE-SU-2019:1364-1

SUSE-SU-2019:1364-2

USN-4269-1

Affected Products

Alt Linux

Astra Linux

Centos

Red Hat

Suse

Ubuntu

Systemd

References · 89

• 🔥 https://exploit-db.com/exploits/46760 · Exploit
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=153487325 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3843 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2019-3843 · Security Note
• https://cve.org/CVERecord?id=CVE-2019-3843 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-3843 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-3843 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-3843 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11420-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-16888 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-3843 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-05729 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5JXQAKSTMABZ46EVCRMW62DHWYHTTFES · Vendor Advisory
• https://osv.dev/vulnerability/USN-4269-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0114SE47 · Vendor Advisory