Gentoo Archives: gentoo-announce

From: Kristian Fiskerstrand <k_f@g.o>
To: gentoo-announce@g.o
Subject: [gentoo-announce] [ GLSA 201409-08 ] libxml2: Denial of Service
Date: Fri, 19 Sep 2014 19:14:24
Message-Id: 541C7BBB.7060405@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201409-08
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4 http://security.gentoo.org/
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6
7 Severity: Normal
8 Title: libxml2: Denial of Service
9 Date: September 19, 2014
10 Bugs: #509834
11 ID: 201409-08
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14
15 Synopsis
16 ========
17
18 A vulnerability in libxml2 allows a remote attacker to cause Denial of
19 Service.
20
21 Background
22 ==========
23
24 libxml2 is the XML C parser and toolkit developed for the Gnome
25 project.
26
27 Affected packages
28 =================
29
30 -------------------------------------------------------------------
31 Package / Vulnerable / Unaffected
32 -------------------------------------------------------------------
33 1 dev-libs/libxml2 < 2.9.1-r4 >= 2.9.1-r4
34
35 Description
36 ===========
37
38 A vulnerability in the xmlParserHandlePEReference() function of
39 parser.c, when expanding entity references, can be exploited to consume
40 large amounts of memory and cause a crash or hang.
41
42 Impact
43 ======
44
45 A remote attacker may be able to cause Denial of Service via a
46 specially crafted XML file containing malicious attributes.
47
48 Workaround
49 ==========
50
51 There is no known workaround at this time.
52
53 Resolution
54 ==========
55
56 All libxml2 users should upgrade to the latest version:
57
58 # emerge --sync
59 # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.9.1-r4"
60
61 References
62 ==========
63
64 [ 1 ] CVE-2014-0191
65 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0191
66
67 Availability
68 ============
69
70 This GLSA and any updates to it are available for viewing at
71 the Gentoo Security Website:
72
73 http://security.gentoo.org/glsa/glsa-201409-08.xml
74
75 Concerns?
76 =========
77
78 Security is a primary focus of Gentoo Linux and ensuring the
79 confidentiality and security of our users' machines is of utmost
80 importance to us. Any security concerns should be addressed to
81 security@g.o or alternatively, you may file a bug at
82 https://bugs.gentoo.org.
83
84 License
85 =======
86
87 Copyright 2014 Gentoo Foundation, Inc; referenced text
88 belongs to its owner(s).
89
90 The contents of this document are licensed under the
91 Creative Commons - Attribution / Share Alike license.
92
93 http://creativecommons.org/licenses/by-sa/2.5

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