Source: mailutils
Severity: serious
Tags: security fixed-upstream

There is a local privilege escalation in the maidag utility:

https://savannah.gnu.org/forum/forum.php?forum_id=9586

   This version fixes important security flow. The maidag utility has
   been withdrawn and three new programs have been included to provide
   its functionality: local mail delivery agent mda, LMTP daemon lmtpd,
   and user mail delivery tool putmail. 

https://git.savannah.gnu.org/cgit/mailutils.git/plain/NEWS

   * The maidag utility is withdrawn

   The main purpose of this utility was to work as local mail delivery
   agent (MDA), a program responsible for final delivery of email messages
   to the recipient's mailbox.  As such it required suid privileges.

   In parallel with its main purpose, it also was able to work in two
   other modes: the 'url' mode, designed to deliver mails to arbitrary
   mailbox URLs, and 'lmtp' mode, in which it acted as local mail
   transport daemon.  Neither of these needed suid privileges.

   The unfortunate design decision to combine the three modes in a single
   versatile tool resulted in local privilege escalation threat in 'url'
   mode.

   To fix this, maidag has been replaced by three different utilities,
   each one with a precisely defined purpose and carefully designed
   privileges: mda, lmtpd, and putmail.

-- 
bye,
pabs

https://wiki.debian.org/PaulWise

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