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 |