Gentoo Archives: gentoo-announce

From: Sean Amoss <ackle@g.o>
To: gentoo-announce@g.o
Subject: [gentoo-announce] [ GLSA 201405-16 ] Mono: Denial of Service
Date: Sun, 18 May 2014 11:53:49
Message-Id: 53789EA6.3050803@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201405-16
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4 http://security.gentoo.org/
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6
7 Severity: Normal
8 Title: Mono: Denial of Service
9 Date: May 18, 2014
10 Bugs: #433768
11 ID: 201405-16
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14
15 Synopsis
16 ========
17
18 A hash collision vulnerability in Mono allows remote attackers to cause
19 a Denial of Service condition.
20
21 Background
22 ==========
23
24 Mono is an open source implementation of Microsoft's .NET Framework.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 dev-lang/mono < 2.10.9-r2 >= 2.10.9-r2
33
34 Description
35 ===========
36
37 Mono does not properly randomize hash functions for form posts to
38 protect against hash collision attacks.
39
40 Impact
41 ======
42
43 A remote attacker could send specially crafted parameters, possibly
44 resulting in a Denial of Service condition.
45
46 Workaround
47 ==========
48
49 There is no known workaround at this time.
50
51 Resolution
52 ==========
53
54 All Mono users should upgrade to the latest version:
55
56 # emerge --sync
57 # emerge --ask --oneshot --verbose ">=dev-lang/mono-2.10.9-r2"
58
59 References
60 ==========
61
62 [ 1 ] CVE-2012-3543
63 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3543
64
65 Availability
66 ============
67
68 This GLSA and any updates to it are available for viewing at
69 the Gentoo Security Website:
70
71 http://security.gentoo.org/glsa/glsa-201405-16.xml
72
73 Concerns?
74 =========
75
76 Security is a primary focus of Gentoo Linux and ensuring the
77 confidentiality and security of our users' machines is of utmost
78 importance to us. Any security concerns should be addressed to
79 security@g.o or alternatively, you may file a bug at
80 https://bugs.gentoo.org.
81
82 License
83 =======
84
85 Copyright 2014 Gentoo Foundation, Inc; referenced text
86 belongs to its owner(s).
87
88 The contents of this document are licensed under the
89 Creative Commons - Attribution / Share Alike license.
90
91 http://creativecommons.org/licenses/by-sa/2.5

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