1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 200410-18 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
http://security.gentoo.org/ |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
Severity: Normal |
8 |
Title: Ghostscript: Insecure temporary file use in multiple |
9 |
scripts |
10 |
Date: October 20, 2004 |
11 |
Bugs: #66357 |
12 |
ID: 200410-18 |
13 |
|
14 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
15 |
|
16 |
Synopsis |
17 |
======== |
18 |
|
19 |
Multiple scripts in the Ghostscript package are vulnerable to symlink |
20 |
attacks, potentially allowing a local user to overwrite arbitrary |
21 |
files with the rights of the user running the script. |
22 |
|
23 |
Background |
24 |
========== |
25 |
|
26 |
Ghostscript is a software package providing an interpreter for the |
27 |
PostScript language and the PDF file format. It also provides output |
28 |
drivers for various file formats and printers. |
29 |
|
30 |
Affected packages |
31 |
================= |
32 |
|
33 |
------------------------------------------------------------------- |
34 |
Package / Vulnerable / Unaffected |
35 |
------------------------------------------------------------------- |
36 |
1 app-text/ghostscript < 7.07.1-r7 >= 7.07.1-r7 |
37 |
*>= 7.05.6-r2 |
38 |
|
39 |
Description |
40 |
=========== |
41 |
|
42 |
The pj-gs.sh, ps2epsi, pv.sh and sysvlp.sh scripts create temporary |
43 |
files in world-writeable directories with predictable names. |
44 |
|
45 |
Impact |
46 |
====== |
47 |
|
48 |
A local attacker could create symbolic links in the temporary files |
49 |
directory, pointing to a valid file somewhere on the filesystem. When |
50 |
an affected script is called, this would result in the file to be |
51 |
overwritten with the rights of the user running the script, which could |
52 |
be the root user. |
53 |
|
54 |
Workaround |
55 |
========== |
56 |
|
57 |
There is no known workaround at this time. |
58 |
|
59 |
Resolution |
60 |
========== |
61 |
|
62 |
Ghostscript users on all architectures except PPC should upgrade to the |
63 |
latest version: |
64 |
|
65 |
# emerge sync |
66 |
|
67 |
# emerge -pv ">=app-text/ghostscript-7.07.1-r7" |
68 |
# emerge ">=app-text/ghostscript-7.07.1-r7" |
69 |
|
70 |
Ghostscript users on the PPC architecture should upgrade to the latest |
71 |
stable version on their architecture: |
72 |
|
73 |
# emerge sync |
74 |
|
75 |
# emerge -pv ">=app-text/ghostscript-7.05.6-r2" |
76 |
# emerge ">=app-text/ghostscript-7.05.6-r2" |
77 |
|
78 |
References |
79 |
========== |
80 |
|
81 |
[ 1 ] CAN-2004-0967 |
82 |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0967 |
83 |
|
84 |
Availability |
85 |
============ |
86 |
|
87 |
This GLSA and any updates to it are available for viewing at |
88 |
the Gentoo Security Website: |
89 |
|
90 |
http://security.gentoo.org/glsa/glsa-200410-18.xml |
91 |
|
92 |
Concerns? |
93 |
========= |
94 |
|
95 |
Security is a primary focus of Gentoo Linux and ensuring the |
96 |
confidentiality and security of our users machines is of utmost |
97 |
importance to us. Any security concerns should be addressed to |
98 |
security@g.o or alternatively, you may file a bug at |
99 |
http://bugs.gentoo.org. |
100 |
|
101 |
License |
102 |
======= |
103 |
|
104 |
Copyright 2004 Gentoo Foundation, Inc; referenced text |
105 |
belongs to its owner(s). |
106 |
|
107 |
The contents of this document are licensed under the |
108 |
Creative Commons - Attribution / Share Alike license. |
109 |
|
110 |
http://creativecommons.org/licenses/by-sa/1.0 |