Main Vulnerability Database Vulnerabilities #VU15674

Race condition in systemd - CVE-2018-15687

Published: November 1, 2018

Vulnerability identifier: #VU15674

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-15687

CWE-ID: CWE-362

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to race condition in chown_one() of systemd. A remote attacker can bypass security restriction and set arbitrary permissions on arbitrary files.

Affected software

systemd
Gentoo Linux
Arch Linux
Fedora

How to mitigate CVE-2018-15687

Install update from vendor's website.

systemd - addressed in versions 238-10.git438ac26.fc28, 239-6.git9f3aed1.fc29

External References

https://github.com/systemd/systemd/pull/10517/commits

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