| 1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 2 |
Gentoo Linux Security Advisory GLSA 200812-16 |
| 3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 4 |
http://security.gentoo.org/ |
| 5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 6 |
|
| 7 |
Severity: Normal |
| 8 |
Title: Dovecot: Multiple vulnerabilities |
| 9 |
Date: December 14, 2008 |
| 10 |
Bugs: #240409, #244962, #245316 |
| 11 |
ID: 200812-16 |
| 12 |
|
| 13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 14 |
|
| 15 |
Synopsis |
| 16 |
======== |
| 17 |
|
| 18 |
Multiple vulnerabilities were found in the Dovecot mailserver. |
| 19 |
|
| 20 |
Background |
| 21 |
========== |
| 22 |
|
| 23 |
Dovecot is an IMAP and POP3 server written with security primarily in |
| 24 |
mind. |
| 25 |
|
| 26 |
Affected packages |
| 27 |
================= |
| 28 |
|
| 29 |
------------------------------------------------------------------- |
| 30 |
Package / Vulnerable / Unaffected |
| 31 |
------------------------------------------------------------------- |
| 32 |
1 net-mail/dovecot < 1.1.7-r1 >= 1.1.7-r1 |
| 33 |
|
| 34 |
Description |
| 35 |
=========== |
| 36 |
|
| 37 |
Several vulnerabilities were found in Dovecot: |
| 38 |
|
| 39 |
* The "k" right in the acl_plugin does not work as expected |
| 40 |
(CVE-2008-4577, CVE-2008-4578) |
| 41 |
|
| 42 |
* The dovecot.conf is world-readable, providing improper protection |
| 43 |
for the ssl_key_password setting (CVE-2008-4870) |
| 44 |
|
| 45 |
* A permanent Denial of Service with broken mail headers is possible |
| 46 |
(CVE-2008-4907) |
| 47 |
|
| 48 |
Impact |
| 49 |
====== |
| 50 |
|
| 51 |
These vulnerabilities might allow a remote attacker to cause a Denial |
| 52 |
of Service, to circumvent security restrictions or allow local |
| 53 |
attackers to disclose the passphrase of the SSL private key. |
| 54 |
|
| 55 |
Workaround |
| 56 |
========== |
| 57 |
|
| 58 |
There is no known workaround at this time. |
| 59 |
|
| 60 |
Resolution |
| 61 |
========== |
| 62 |
|
| 63 |
All Dovecot users should upgrade to the latest version: |
| 64 |
|
| 65 |
# emerge --sync |
| 66 |
# emerge --ask --oneshot --verbose ">=net-mail/dovecot-1.1.7-r1" |
| 67 |
|
| 68 |
Users should be aware that dovecot.conf will still be world-readable |
| 69 |
after the update. If employing ssl_key_password, it should not be used |
| 70 |
in dovecot.conf but in a separate file which should be included with |
| 71 |
"include_try". |
| 72 |
|
| 73 |
References |
| 74 |
========== |
| 75 |
|
| 76 |
[ 1 ] CVE-2008-4577 |
| 77 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4577 |
| 78 |
[ 2 ] CVE-2008-4578 |
| 79 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4578 |
| 80 |
[ 3 ] CVE-2008-4870 |
| 81 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4870 |
| 82 |
[ 4 ] CVE-2008-4907 |
| 83 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4907 |
| 84 |
|
| 85 |
Availability |
| 86 |
============ |
| 87 |
|
| 88 |
This GLSA and any updates to it are available for viewing at |
| 89 |
the Gentoo Security Website: |
| 90 |
|
| 91 |
http://security.gentoo.org/glsa/glsa-200812-16.xml |
| 92 |
|
| 93 |
Concerns? |
| 94 |
========= |
| 95 |
|
| 96 |
Security is a primary focus of Gentoo Linux and ensuring the |
| 97 |
confidentiality and security of our users machines is of utmost |
| 98 |
importance to us. Any security concerns should be addressed to |
| 99 |
security@g.o or alternatively, you may file a bug at |
| 100 |
http://bugs.gentoo.org. |
| 101 |
|
| 102 |
License |
| 103 |
======= |
| 104 |
|
| 105 |
Copyright 2008 Gentoo Foundation, Inc; referenced text |
| 106 |
belongs to its owner(s). |
| 107 |
|
| 108 |
The contents of this document are licensed under the |
| 109 |
Creative Commons - Attribution / Share Alike license. |
| 110 |
|
| 111 |
http://creativecommons.org/licenses/by-sa/2.5 |
Archives