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A local user may be able to exploit sudo to elevate privileges to root as long as the sudoers file (usually /etc/sudoers) is present

Sudo versions affected:
"Sudo versions 1.8.2 through 1.8.31p2 and 1.9.0 through 1.9.5p1 are affected."


https://www.sudo.ws/alerts/unescape_overflow.html

Fixed by update routine (if auto updates are enabled), chroot envoiurment is not affected, e.g. reply by Alexander here (in german): viewtopic.php?f=2&p=27694#p27694