1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 201309-03 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
http://security.gentoo.org/ |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
Severity: Normal |
8 |
Title: Xlockmore: Denial of Service |
9 |
Date: September 02, 2013 |
10 |
Bugs: #255229, #440776, #477328 |
11 |
ID: 201309-03 |
12 |
|
13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
14 |
|
15 |
Synopsis |
16 |
======== |
17 |
|
18 |
A buffer overflow in Xlockmore might allow remote attackers to cause a |
19 |
Denial of Service. |
20 |
|
21 |
Background |
22 |
========== |
23 |
|
24 |
Xlockmore is just another screensaver application for X. |
25 |
|
26 |
Affected packages |
27 |
================= |
28 |
|
29 |
------------------------------------------------------------------- |
30 |
Package / Vulnerable / Unaffected |
31 |
------------------------------------------------------------------- |
32 |
1 x11-misc/xlockmore < 5.43 >= 5.43 |
33 |
|
34 |
Description |
35 |
=========== |
36 |
|
37 |
A Denial of Service flaw was found in the way Xlockmore performed |
38 |
the passing of arguments to the underlying localtime() call, when the |
39 |
'dlock' mode was used. |
40 |
|
41 |
Impact |
42 |
====== |
43 |
|
44 |
A local attacker could possibly cause a Denial of Service condition and |
45 |
potentially obtain unauthorized access to the graphical session, |
46 |
previously locked by another user. |
47 |
|
48 |
Workaround |
49 |
========== |
50 |
|
51 |
There is no known workaround at this time. |
52 |
|
53 |
Resolution |
54 |
========== |
55 |
|
56 |
All Xlockmore users should upgrade to the latest version: |
57 |
|
58 |
# emerge --sync |
59 |
# emerge --ask --oneshot --verbose ">=x11-misc/xlockmore-5.43" |
60 |
|
61 |
References |
62 |
========== |
63 |
|
64 |
[ 1 ] CVE-2012-4524 |
65 |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4524 |
66 |
[ 2 ] CVE-2013-4143 |
67 |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4143 |
68 |
|
69 |
Availability |
70 |
============ |
71 |
|
72 |
This GLSA and any updates to it are available for viewing at |
73 |
the Gentoo Security Website: |
74 |
|
75 |
http://security.gentoo.org/glsa/glsa-201309-03.xml |
76 |
|
77 |
Concerns? |
78 |
========= |
79 |
|
80 |
Security is a primary focus of Gentoo Linux and ensuring the |
81 |
confidentiality and security of our users' machines is of utmost |
82 |
importance to us. Any security concerns should be addressed to |
83 |
security@g.o or alternatively, you may file a bug at |
84 |
https://bugs.gentoo.org. |
85 |
|
86 |
License |
87 |
======= |
88 |
|
89 |
Copyright 2013 Gentoo Foundation, Inc; referenced text |
90 |
belongs to its owner(s). |
91 |
|
92 |
The contents of this document are licensed under the |
93 |
Creative Commons - Attribution / Share Alike license. |
94 |
|
95 |
http://creativecommons.org/licenses/by-sa/2.5 |