Gentoo Archives: gentoo-announce

From: Mikle Kolyada <zlogene@g.o>
To: gentoo-announce@g.o
Subject: [gentoo-announce] [ GLSA 201403-02 ] LibYAML: Arbitrary code execution
Date: Sat, 08 Mar 2014 18:51:09
Message-Id: 531B6769.2050408@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201403-02
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4 http://security.gentoo.org/
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6
7 Severity: Normal
8 Title: LibYAML: Arbitrary code execution
9 Date: March 08, 2014
10 Bugs: #499920
11 ID: 201403-02
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14
15 Synopsis
16 ========
17
18 A Vulnerability in LibYAML could result in execution of arbitrary code.
19
20 Background
21 ==========
22
23 LibYAML is a YAML 1.1 parser and emitter written in C.
24
25 Affected packages
26 =================
27
28 -------------------------------------------------------------------
29 Package / Vulnerable / Unaffected
30 -------------------------------------------------------------------
31 1 dev-libs/libyaml < 0.1.5 >= 0.1.5
32
33 Description
34 ===========
35
36 A heap-based buffer overflow flaw was found in the way libyaml parsed
37 YAML tags.
38
39 Impact
40 ======
41
42 A remote attacker could provide a specially-crafted YAML document which
43 when parsed by LibYAML, would cause the application to crash or,
44 potentially, execute arbitrary code with the privileges the user who is
45 running the application.
46
47 Workaround
48 ==========
49
50 There is no known workaround at this time.
51
52 Resolution
53 ==========
54
55 All LibYAML users should upgrade to the latest version:
56
57 # emerge --sync
58 # emerge --ask --oneshot --verbose ">=dev-libs/libyaml-0.1.5"
59
60 References
61 ==========
62
63 [ 1 ] CVE-2013-6393
64 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-6393
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-201403-02.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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