CVE-2017-18078
published 2018-01-29CVE-2017-18078: systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned…
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EXPLOIT
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.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | systemd | < systemd 237-1 (bookworm) | systemd 237-1 (bookworm) |
| opensuse | leap | — | — |
| systemd_project | systemd | < 237 | 237 |
| systemd_project | systemd | >= 0 < 237-1 | 237-1 |
| systemd_project | systemd | >= 0 < 237-1 | 237-1 |
| systemd_project | systemd | >= 0 < 237-1 | 237-1 |
| systemd_project | systemd | >= 0 < 237-1 | 237-1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH