| Name | CVE-2017-18018 |
| Description | In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| coreutils (PTS) | jessie | 8.23-4 | vulnerable |
| stretch | 8.26-3 | vulnerable | |
| buster | 8.30-3 | vulnerable | |
| bullseye | 8.32-4 | vulnerable | |
| bookworm | 9.1-1 | vulnerable | |
| sid, trixie | 9.5-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| coreutils | source | (unstable) | (unfixed) | unimportant |
http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html
https://www.openwall.com/lists/oss-security/2018/01/04/3
Documentation patches proposed:
https://lists.gnu.org/archive/html/coreutils/2017-12/msg00072.html
https://lists.gnu.org/archive/html/coreutils/2017-12/msg00073.html
Neutralised by kernel hardening