| Name | CVE-2017-9525 |
| Description | In the cron package through 3.0pl1-128 on Debian, and through 3.0pl1-128ubuntu2 on Ubuntu, the postinst maintainer script allows for group-crontab-to-root privilege escalation via symlink attacks against unsafe usage of the chown and chmod programs. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1723-1, DLA-2801-1 |
| Debian Bugs | 864466, 993731 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| cron (PTS) | buster | 3.0pl1-134+deb10u1 | fixed |
| bullseye | 3.0pl1-137 | fixed |
| bookworm | 3.0pl1-162 | fixed |
| sid, trixie | 3.0pl1-189 | fixed |
| systemd-cron (PTS) | buster | 1.5.14-2 | vulnerable |
| bullseye | 1.5.16-1 | vulnerable |
| bookworm | 1.15.19-5 | fixed |
| sid, trixie | 2.3.4-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[wheezy] - cron <no-dsa> (Minor issue)
[bullseye] - systemd-cron <no-dsa> (Minor issue)
[buster] - systemd-cron <no-dsa> (Minor issue)
[stretch] - systemd-cron <no-dsa> (Minor issue)
https://www.openwall.com/lists/oss-security/2017/06/08/3