PT-2018-3793 · Systemd+2 · Systemd+2

Jann Horn · Published 2018-10-26 · Updated 2024-06-15 · CVE-2018-15687

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 versions up to and including 239

Description A race condition in the chown one() function of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. This issue is related to a situation where multiple executions use a shared resource with incorrect synchronization, which can be exploited to elevate privileges.

Recommendations For systemd versions up to and including 239, update to a version higher than 239 to resolve the issue. As a temporary workaround, consider restricting access to sensitive files and directories to minimize the risk of exploitation.

Exploit

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

ALT-PU-2018-2572

ALT-PU-2019-1000

BDU:2022-03137

CVE-2018-15687

OPENSUSE-SU-2024:11420-1

USN-3816-1

USN-3816-3

Affected Products

Alt Linux

Ubuntu

Systemd

References · 44

• 🔥 https://exploit-db.com/exploits/45715 · Exploit
• https://github.com/systemd/systemd/pull/10517/commits · Patch
• https://security.gentoo.org/glsa/201810-10 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15687 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-15686 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-15687 · Vendor Advisory
• https://usn.ubuntu.com/3816-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11420-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3816-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-15687 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3816-3 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-15687 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-6954 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-15687 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-15687 · Security Note