1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 200403-05 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
~ http://security.gentoo.org |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
~ Severity: Normal |
8 |
~ Title: UUDeview MIME Buffer Overflow |
9 |
~ Date: March 26, 2004 |
10 |
~ Bugs: #44859 |
11 |
~ ID: 200403-05 |
12 |
|
13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
14 |
|
15 |
Synopsis |
16 |
======== |
17 |
|
18 |
A specially-crafted MIME file (.mim, .uue, .uu, .b64, .bhx, .hqx, and |
19 |
.xxe extensions) may cause UUDeview to crash or execute arbitrary code. |
20 |
|
21 |
Background |
22 |
========== |
23 |
|
24 |
UUDeview is a program which is used to transmit binary files over the |
25 |
Internet in a text-only format. It is commonly used for email and Usenet |
26 |
attachments. It supports multiple encoding formats, including Base64, |
27 |
BinHex and UUEncoding. |
28 |
|
29 |
Description |
30 |
=========== |
31 |
|
32 |
By decoding a MIME archive with excessively long strings for various |
33 |
parameters, it is possible to crash UUDeview, or cause it to execute |
34 |
arbitrary code. |
35 |
|
36 |
This vulnerability was originally reported by iDEFENSE as part of a |
37 |
WinZip advisory [ Reference: 1 ]. |
38 |
|
39 |
Impact |
40 |
====== |
41 |
|
42 |
An attacker could create a specially-crafted MIME file and send it via |
43 |
email. When recipient decodes the file, UUDeview may execute arbitrary |
44 |
code which is embedded in the MIME file, thus granting the attacker |
45 |
access to the recipient's account. |
46 |
|
47 |
Workaround |
48 |
========== |
49 |
|
50 |
All users should upgrade to UUDeview 0.5.20: |
51 |
|
52 |
~ # emerge sync |
53 |
~ # emerge -pv ">=app-text/uudeview-0.5.20" |
54 |
~ # emerge ">=app-text/uudeview-0.5.20" |
55 |
|
56 |
References |
57 |
========== |
58 |
|
59 |
~ [ 1 ] http://www.idefense.com/application/poi/display?id=76 |
60 |
~ [ 2 ] http://www.securityfocus.com/bid/9758 |
61 |
|
62 |
Concerns? |
63 |
========= |
64 |
|
65 |
Security is a primary focus of Gentoo Linux and ensuring the |
66 |
confidentiality and security of our users machines is of utmost |
67 |
importance to us. Any security concerns should be addressed to |
68 |
security@g.o or alternatively, you may file a bug at |
69 |
http://bugs.gentoo.org. |