Dovecot: Multiple vulnerabilities
1.
Gentoo Linux Security Advisory
Version Information
| Advisory Reference |
GLSA 200812-16 / dovecot |
| Release Date |
December 14, 2008 |
| Latest Revision |
December 14, 2008: 01 |
| Impact |
normal |
| Exploitable |
remote |
| Package |
Vulnerable versions |
Unaffected versions |
Architecture(s) |
| net-mail/dovecot |
<
1.1.7-r1 |
>=
1.1.7-r1 |
All supported architectures
|
Related bugreports:
#240409, #244962, #245316
Synopsis
Multiple vulnerabilities were found in the Dovecot mailserver.
2.
Impact Information
Background
Dovecot is an IMAP and POP3 server written with security primarily in
mind.
Description
Several vulnerabilities were found in Dovecot:
- The "k"
right in the acl_plugin does not work as expected (CVE-2008-4577,
CVE-2008-4578)
- The dovecot.conf is world-readable, providing
improper protection for the ssl_key_password setting
(CVE-2008-4870)
- A permanent Denial of Service with broken mail
headers is possible (CVE-2008-4907)
Impact
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.
3.
Resolution Information
Workaround
There is no known workaround at this time.
Resolution
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
"include_try".
4.
References
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