1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 200511-10 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
http://security.gentoo.org/ |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
Severity: Normal |
8 |
Title: RAR: Format string and buffer overflow vulnerabilities |
9 |
Date: November 13, 2005 |
10 |
Bugs: #111926 |
11 |
ID: 200511-10 |
12 |
|
13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
14 |
|
15 |
Synopsis |
16 |
======== |
17 |
|
18 |
RAR contains a format string error and a buffer overflow vulnerability |
19 |
that may be used to execute arbitrary code. |
20 |
|
21 |
Background |
22 |
========== |
23 |
|
24 |
RAR is a powerful archive manager that can decompress RAR, ZIP and |
25 |
other files, and can create new archives in RAR and ZIP file format. |
26 |
|
27 |
Affected packages |
28 |
================= |
29 |
|
30 |
------------------------------------------------------------------- |
31 |
Package / Vulnerable / Unaffected |
32 |
------------------------------------------------------------------- |
33 |
1 app-arch/rar < 3.5.1 >= 3.5.1 |
34 |
|
35 |
Description |
36 |
=========== |
37 |
|
38 |
Tan Chew Keong reported about two vulnerabilities found in RAR: |
39 |
|
40 |
* A format string error exists when displaying a diagnostic error |
41 |
message that informs the user of an invalid filename in an UUE/XXE |
42 |
encoded file. |
43 |
|
44 |
* Some boundary errors in the processing of malicious ACE archives |
45 |
can be exploited to cause a buffer overflow. |
46 |
|
47 |
Impact |
48 |
====== |
49 |
|
50 |
A remote attacker could exploit these vulnerabilities by enticing a |
51 |
user to: |
52 |
|
53 |
* decode a specially crafted UUE/XXE file, or |
54 |
|
55 |
* extract a malicious ACE archive containing a file with an overly |
56 |
long filename. |
57 |
|
58 |
When the user performs these actions, the arbitrary code of the |
59 |
attacker's choice will be executed. |
60 |
|
61 |
Workaround |
62 |
========== |
63 |
|
64 |
There is no known workaround at this time. |
65 |
|
66 |
Resolution |
67 |
========== |
68 |
|
69 |
All RAR users should upgrade to the latest version: |
70 |
|
71 |
# emerge --sync |
72 |
# emerge --ask --oneshot --verbose ">=app-arch/rar-3.5.1" |
73 |
|
74 |
References |
75 |
========== |
76 |
|
77 |
[ 1 ] RAR Release Notes |
78 |
http://www.rarlabs.com/rarnew.htm |
79 |
[ 2 ] Secunia Research 11/10/2005 |
80 |
http://secunia.com/secunia_research/2005-53/advisory/ |
81 |
|
82 |
Availability |
83 |
============ |
84 |
|
85 |
This GLSA and any updates to it are available for viewing at |
86 |
the Gentoo Security Website: |
87 |
|
88 |
http://security.gentoo.org/glsa/glsa-200511-10.xml |
89 |
|
90 |
Concerns? |
91 |
========= |
92 |
|
93 |
Security is a primary focus of Gentoo Linux and ensuring the |
94 |
confidentiality and security of our users machines is of utmost |
95 |
importance to us. Any security concerns should be addressed to |
96 |
security@g.o or alternatively, you may file a bug at |
97 |
http://bugs.gentoo.org. |
98 |
|
99 |
License |
100 |
======= |
101 |
|
102 |
Copyright 2005 Gentoo Foundation, Inc; referenced text |
103 |
belongs to its owner(s). |
104 |
|
105 |
The contents of this document are licensed under the |
106 |
Creative Commons - Attribution / Share Alike license. |
107 |
|
108 |
http://creativecommons.org/licenses/by-sa/2.0 |