Privilege Escalation

dovecot is vulnerable to privilege escalation. A flaw was discovered in the way Dovecot handled the "mailextragroups" option. An authenticated attacker with local shell access could leverage this flaw to read, modify, or delete other users mail that is stored on the mail server...

Scientific Linux Security Update : dovecot on SL5.x i386/x86_64

A flaw was discovered in the way Dovecot handled the 'mailextragroups' option. An authenticated attacker with local shell access could leverage this flaw to read, modify, or delete other users mail that is stored on the mail server. CVE-2008-1199 This issue did not affect the default Red Hat...

dovecot security and bug fix update

1.0.7-2 - LDAP+auth cache user login mixup CVE-2007-6598, 427575 - insecure mailextragroups option CVE-2008-1199, 436927 1.0.7-1 - update to latest upstream, fixes a few bugs 331441, 245249, plus two security vulnerabilities CVE-2007-2231, CVE-2007-4211 - increased default loginprocesssize to 64...

Debian DSA-1516-1 : dovecot - privilege escalation

Prior to this update, the default configuration for Dovecot used by Debian runs the server daemons with group mail privileges. This means that users with write access to their mail directory on the server for example, through an SSH login could read and also delete via a symbolic link mailboxes...

DSA-1516-1 dovecot - privilege escalation

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Design/Logic Flaw

Dovecot before 1.0.11, when configured to use mailextragroups to allow Dovecot to create dotlocks in /var/mail, might allow local users to read sensitive mail files for other users, or modify files or directories that are writable by group, via a symlink attack...

Dovecot mail_extra_groups setting is often used insecurely

mailextragroups=mail setting is often used insecurely to give Dovecot access to create dotlocks to /var/mail directory. If you don't use mboxes in /var/mail, make sure this setting is cleared. If you do use /var/mail mboxes and Dovecot gives permission errors without it, do one of the following i...