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Date: Thu, 8 Jun 2017 15:44:41 -0700
From: Ian Zimmerman <itz@...mate.net>
To: oss-security@...ts.openwall.com
Subject: Re: Vixie/ISC Cron group crontab to root escalation
On 2017-06-08 20:05, Solar Designer wrote:
> Gentoo has a wiki page describing their Vixie Cron here:
>
> https://wiki.gentoo.org/wiki/Cron#vixie-cron
>
> Per their description, it's based on 4.1 and has some Linux specifics
> added (SELinux, PAM, etc.) I don't know whether they use group
> crontab.
Yes:
~$ ls -l /usr/bin/crontab
-rwxr-sr-x 1 root crontab 44336 Oct 12 2016 /usr/bin/crontab
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