Dovecot: Multiple vulnerabilities
Gentoo Linux Security Advisory
||GLSA 200812-16 / dovecot
||December 14, 2008
||December 14, 2008: 01
All supported architectures
#240409, #244962, #245316
Multiple vulnerabilities were found in the Dovecot mailserver.
Dovecot is an IMAP and POP3 server written with security primarily in
Several vulnerabilities were found in Dovecot:
- The "k"
right in the acl_plugin does not work as expected (CVE-2008-4577,
- The dovecot.conf is world-readable, providing
improper protection for the ssl_key_password setting
- A permanent Denial of Service with broken mail
headers is possible (CVE-2008-4907)
These vulnerabilities might allow a remote attacker to cause a Denial
of Service, to circumvent security restrictions or allow local
attackers to disclose the passphrase of the SSL private key.
There is no known workaround at this time.
All Dovecot users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/dovecot-1.1.7-r1"
Users should be aware that dovecot.conf will still be world-readable
after the update. If employing ssl_key_password, it should not be used
in dovecot.conf but in a separate file which should be included with