*** This bug is a security vulnerability ***

You have been subscribed to a public security bug by Marc Deslauriers 
(mdeslaur):

Steps to reproduce:

$ printf 'test:\n~! echo ALERT\nbye!\n' | mail TO_SOME_ADDRESS

Observed: "ALERT" is printed to standard output.
Expected: String "~! echo ALERT" shall be send as second line of the mail.

Command escapes should only be processed if used interactively.

Related security issues:
https://security-tracker.debian.org/tracker/CVE-2021-32749
https://www.smartmontools.org/ticket/1535

Fixed in mailutils 3.13, see https://savannah.gnu.org/bugs/?60937

Regards,
Christian Franke
smartmontools.org

** Affects: mailutils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: community-security
-- 
mail(1) processes command escapes also if used non-interactively
https://bugs.launchpad.net/bugs/1948712
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