1 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2 |
Gentoo Linux Security Advisory GLSA 201409-10 |
3 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
4 |
http://security.gentoo.org/ |
5 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
6 |
|
7 |
Severity: High |
8 |
Title: Bash: Code Injection (Updated fix for GLSA 201409-09) |
9 |
Date: September 25, 2014 |
10 |
Bugs: #523592 |
11 |
ID: 201409-10 |
12 |
|
13 |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
14 |
|
15 |
Synopsis |
16 |
======== |
17 |
|
18 |
A parsing flaw related to functions and environments in Bash could |
19 |
allow attackers to inject code. The unaffected packages listed in GLSA |
20 |
201409-09 had an incomplete fix. |
21 |
|
22 |
Background |
23 |
========== |
24 |
|
25 |
Bash is the standard GNU Bourne Again SHell. |
26 |
|
27 |
Affected packages |
28 |
================= |
29 |
|
30 |
------------------------------------------------------------------- |
31 |
Package / Vulnerable / Unaffected |
32 |
------------------------------------------------------------------- |
33 |
1 app-shells/bash < 4.2_p48-r1 *>= 3.1_p18-r1 |
34 |
*>= 3.2_p52-r1 |
35 |
*>= 4.0_p39-r1 |
36 |
*>= 4.1_p12-r1 |
37 |
>= 4.2_p48-r1 |
38 |
|
39 |
Description |
40 |
=========== |
41 |
|
42 |
Stephane Chazelas reported that Bash incorrectly handles function |
43 |
definitions, allowing attackers to inject arbitrary code |
44 |
(CVE-2014-6271). Gentoo Linux informed about this issue in GLSA |
45 |
201409-09. |
46 |
|
47 |
Tavis Ormandy reported that the patch for CVE-2014-6271 was incomplete. |
48 |
As such, this GLSA supersedes GLSA 201409-09. |
49 |
|
50 |
Impact |
51 |
====== |
52 |
|
53 |
A remote attacker could exploit this vulnerability to execute arbitrary |
54 |
commands even in restricted environments. |
55 |
|
56 |
Workaround |
57 |
========== |
58 |
|
59 |
There is no known workaround at this time. |
60 |
|
61 |
Resolution |
62 |
========== |
63 |
|
64 |
All Bash 3.1 users should upgrade to the latest version: |
65 |
|
66 |
# emerge --sync |
67 |
# emerge --ask --oneshot --verbose ">=app-shells/bash-3.1_p18-r1" |
68 |
|
69 |
All Bash 3.2 users should upgrade to the latest version: |
70 |
|
71 |
# emerge --sync |
72 |
# emerge --ask --oneshot --verbose ">=app-shells/bash-3.2_p52-r1" |
73 |
|
74 |
All Bash 4.0 users should upgrade to the latest version: |
75 |
|
76 |
# emerge --sync |
77 |
# emerge --ask --oneshot --verbose ">=app-shells/bash-4.0_p39-r1" |
78 |
|
79 |
All Bash 4.1 users should upgrade to the latest version: |
80 |
|
81 |
# emerge --sync |
82 |
# emerge --ask --oneshot --verbose ">=app-shells/bash-4.1_p12-r1" |
83 |
|
84 |
All Bash 4.2 users should upgrade to the latest version: |
85 |
|
86 |
# emerge --sync |
87 |
# emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p48-r1" |
88 |
|
89 |
References |
90 |
========== |
91 |
|
92 |
[ 1 ] CVE-2014-7169 |
93 |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7169 |
94 |
|
95 |
Availability |
96 |
============ |
97 |
|
98 |
This GLSA and any updates to it are available for viewing at |
99 |
the Gentoo Security Website: |
100 |
|
101 |
http://security.gentoo.org/glsa/glsa-201409-10.xml |
102 |
|
103 |
Concerns? |
104 |
========= |
105 |
|
106 |
Security is a primary focus of Gentoo Linux and ensuring the |
107 |
confidentiality and security of our users' machines is of utmost |
108 |
importance to us. Any security concerns should be addressed to |
109 |
security@g.o or alternatively, you may file a bug at |
110 |
https://bugs.gentoo.org. |
111 |
|
112 |
License |
113 |
======= |
114 |
|
115 |
Copyright 2014 Gentoo Foundation, Inc; referenced text |
116 |
belongs to its owner(s). |
117 |
|
118 |
The contents of this document are licensed under the |
119 |
Creative Commons - Attribution / Share Alike license. |
120 |
|
121 |
http://creativecommons.org/licenses/by-sa/2.5 |