1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 200707-06 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
http://security.gentoo.org/ |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
Severity: Normal |
8 |
Title: XnView: Stack-based buffer overflow |
9 |
Date: July 11, 2007 |
10 |
Bugs: #175670 |
11 |
ID: 200707-06 |
12 |
|
13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
14 |
|
15 |
Synopsis |
16 |
======== |
17 |
|
18 |
XnView is vulnerable to a stack-based buffer overflow and possible |
19 |
remote code execution when handling XPM image files. |
20 |
|
21 |
Background |
22 |
========== |
23 |
|
24 |
XnView is software to view and convert graphics files. XPixMap (XPM) is |
25 |
a simple ascii-based graphics format. |
26 |
|
27 |
Affected packages |
28 |
================= |
29 |
|
30 |
------------------------------------------------------------------- |
31 |
Package / Vulnerable / Unaffected |
32 |
------------------------------------------------------------------- |
33 |
1 x11-misc/xnview < 1.70 Vulnerable! |
34 |
------------------------------------------------------------------- |
35 |
# Package 1 only applies to x86 users. |
36 |
------------------------------------------------------------------- |
37 |
NOTE: Certain packages are still vulnerable. Users should migrate |
38 |
to another package if one is available or wait for the |
39 |
existing packages to be marked stable by their |
40 |
architecture maintainers. |
41 |
|
42 |
Description |
43 |
=========== |
44 |
|
45 |
XnView is vulnerable to a stack-based buffer overflow while processing |
46 |
an XPM file with an overly long section string (greater than 1024 |
47 |
bytes). |
48 |
|
49 |
Impact |
50 |
====== |
51 |
|
52 |
An attacker could entice a user to view a specially crafted XPM file |
53 |
with XnView that could trigger the vulnerability and possibly execute |
54 |
arbitrary code with the rights of the user running XnView. |
55 |
|
56 |
Workaround |
57 |
========== |
58 |
|
59 |
There is no known workaround at this time. |
60 |
|
61 |
Resolution |
62 |
========== |
63 |
|
64 |
No update appears to be forthcoming from the XnView developer and |
65 |
XnView is proprietary, so the XnView package has been masked in |
66 |
Portage. We recommend that users select an alternate graphics viewer |
67 |
and conversion utility, and unmerge XnView: |
68 |
|
69 |
# emerge --unmerge xnview |
70 |
|
71 |
References |
72 |
========== |
73 |
|
74 |
[ 1 ] CVE-2007-2194 |
75 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2194 |
76 |
|
77 |
Availability |
78 |
============ |
79 |
|
80 |
This GLSA and any updates to it are available for viewing at |
81 |
the Gentoo Security Website: |
82 |
|
83 |
http://security.gentoo.org/glsa/glsa-200707-06.xml |
84 |
|
85 |
Concerns? |
86 |
========= |
87 |
|
88 |
Security is a primary focus of Gentoo Linux and ensuring the |
89 |
confidentiality and security of our users machines is of utmost |
90 |
importance to us. Any security concerns should be addressed to |
91 |
security@g.o or alternatively, you may file a bug at |
92 |
http://bugs.gentoo.org. |
93 |
|
94 |
License |
95 |
======= |
96 |
|
97 |
Copyright 2007 Gentoo Foundation, Inc; referenced text |
98 |
belongs to its owner(s). |
99 |
|
100 |
The contents of this document are licensed under the |
101 |
Creative Commons - Attribution / Share Alike license. |
102 |
|
103 |
http://creativecommons.org/licenses/by-sa/2.5 |