CVE-2018-15687

Public Exploit
systemd: chown_one() can dereference symlinks

Description

A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.

Category

7.0
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.35%
Vendor Advisory gentoo.org Vendor Advisory ubuntu.com
Affected: systemd systemd
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201810-10 third party advisory vendor advisory
https://github.com/systemd/systemd/pull/10517/commits third party advisory patch
http://www.securityfocus.com/bid/105748 vdb entry third party advisory broken link
https://usn.ubuntu.com/3816-1/ third party advisory vendor advisory
https://www.exploit-db.com/exploits/45715/ exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-15687?
CVE-2018-15687 has been scored as a high severity vulnerability.
How to fix CVE-2018-15687?
To fix CVE-2018-15687, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-15687 being actively exploited in the wild?
It is possible that CVE-2018-15687 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-15687?
CVE-2018-15687 affects systemd systemd.
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