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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade systemd-cronUpgrade cron | Mar 22, 2019 | Jun 9, 2017 |
| Ubuntu | — | Upgrade cron (Ubuntu Pro)Upgrade cron | Feb 2, 2022 | Jun 9, 2017 |
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