Gentoo Archives: gentoo-announce

From: Alex Legler <a3li@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 201402-12 ] PAM S/Key: Information disclosure
Date: Sun, 09 Feb 2014 11:14:22
Message-Id: 52F76299.5050001@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201402-12
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4 http://security.gentoo.org/
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6
7 Severity: Normal
8 Title: PAM S/Key: Information disclosure
9 Date: February 09, 2014
10 Bugs: #482588
11 ID: 201402-12
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14
15 Synopsis
16 ========
17
18 PAM S/Key does not clear provided credentials from memory, allowing
19 local attackers to gain access to cleartext credentials.
20
21 Background
22 ==========
23
24 PAM S/Key is a pluggable authentication module for the OpenBSD
25 Single-key Password system.
26
27 Affected packages
28 =================
29
30 -------------------------------------------------------------------
31 Package / Vulnerable / Unaffected
32 -------------------------------------------------------------------
33 1 sys-auth/pam_skey < 1.1.5-r5 >= 1.1.5-r5
34
35 Description
36 ===========
37
38 Ulrich Müller reported that a Gentoo patch to PAM S/Key does not remove
39 credentials provided by the user from memory.
40
41 Impact
42 ======
43
44 A local attacker with privileged access could inspect a memory dump to
45 gain access to cleartext credentials provided by users.
46
47 Workaround
48 ==========
49
50 There is no known workaround at this time.
51
52 Resolution
53 ==========
54
55 All PAM S/Key users should upgrade to the latest version:
56
57 # emerge --sync
58 # emerge --ask --oneshot --verbose ">=sys-auth/pam_skey-1.1.5-r5"
59
60 References
61 ==========
62
63 [ 1 ] CVE-2013-4285
64 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4285
65
66 Availability
67 ============
68
69 This GLSA and any updates to it are available for viewing at
70 the Gentoo Security Website:
71
72 http://security.gentoo.org/glsa/glsa-201402-12.xml
73
74 Concerns?
75 =========
76
77 Security is a primary focus of Gentoo Linux and ensuring the
78 confidentiality and security of our users' machines is of utmost
79 importance to us. Any security concerns should be addressed to
80 security@g.o or alternatively, you may file a bug at
81 https://bugs.gentoo.org.
82
83 License
84 =======
85
86 Copyright 2014 Gentoo Foundation, Inc; referenced text
87 belongs to its owner(s).
88
89 The contents of this document are licensed under the
90 Creative Commons - Attribution / Share Alike license.
91
92 http://creativecommons.org/licenses/by-sa/2.5

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