VDB
CVE-2017-18078
CVE-2017-18078
PUBLISHED
CVSS 7.800000190734863 HIGH
systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.
EPSS 1.06% · 63.4th percentile
Risk Scores
CVSS 3.0
7.800000190734863
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
1.06%
63.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:14.04:LTS | systemd | 0, 204-0ubuntu18, 204-0ubuntu19 |
| Ubuntu:Pro:16.04:LTS | systemd | 229-4ubuntu21.29, 229-4ubuntu21.31, 229-4ubuntu21.31+esm1 |
Timeline
- Jan 29, 2018 CVE Published
- Jan 31, 2018 PoC Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 27, 2021 EPSS Score
- Dec 30, 2021 EPSS Score
- Mar 3, 2022 EPSS Score
- May 5, 2022 EPSS Score
- May 13, 2022 CVE Updated
- Jul 7, 2022 EPSS Score
- Sep 9, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-18078 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-18078 third-party-advisory