Gentoo Archives: gentoo-announce

From: Stefan Behte <craig@g.o>
To: gentoo-announce@g.o, bugtraq@×××××××××××××.com, full-disclosure@××××××××××××××.uk, security-alerts@×××××××××××××.com
Subject: [gentoo-announce] [ GLSA 201009-07 ] libxml2: Denial of Service
Date: Tue, 21 Sep 2010 22:18:49
Message-Id: 4C9926A6.9090603@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201009-07
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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 21, 2010
10 Bugs: #280617
11 ID: 201009-07
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14
15 Synopsis
16 ========
17
18 Multiple Denial of Services vulnerabilities were found in libxml2.
19
20 Background
21 ==========
22
23 libxml2 is a library to manipulate XML files.
24
25 Affected packages
26 =================
27
28 -------------------------------------------------------------------
29 Package / Vulnerable / Unaffected
30 -------------------------------------------------------------------
31 1 dev-libs/libxml2 < 2.7.3-r2 >= 2.7.3-r2
32
33 Description
34 ===========
35
36 The following vulnerabilities were reported after a test with the
37 Codenomicon XML fuzzing framework:
38
39 * Two use-after-free vulnerabilities are possible when parsing a XML
40 file with Notation or Enumeration attribute types (CVE-2009-2416).
41
42 * A stack consumption vulnerability can be triggered via a large
43 depth of element declarations in a DTD, related to a function
44 recursion (CVE-2009-2414).
45
46 Impact
47 ======
48
49 A remote attacker could entice a user or automated system to open a
50 specially crafted XML document with an application using libxml2
51 resulting in a Denial of Service condition.
52
53 Workaround
54 ==========
55
56 There is no known workaround at this time.
57
58 Resolution
59 ==========
60
61 All libxml2 users should upgrade to the latest version:
62
63 # emerge --sync
64 # emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.3-r2"
65
66 NOTE: This is a legacy GLSA. Updates for all affected architectures are
67 available since August 30, 2009. It is likely that your system is
68 already no longer affected by this issue.
69
70 References
71 ==========
72
73 [ 1 ] CVE-2009-2414
74 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2414
75 [ 2 ] CVE-2009-2416
76 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2416
77
78 Availability
79 ============
80
81 This GLSA and any updates to it are available for viewing at
82 the Gentoo Security Website:
83
84 http://security.gentoo.org/glsa/glsa-201009-07.xml
85
86 Concerns?
87 =========
88
89 Security is a primary focus of Gentoo Linux and ensuring the
90 confidentiality and security of our users machines is of utmost
91 importance to us. Any security concerns should be addressed to
92 security@g.o or alternatively, you may file a bug at
93 https://bugs.gentoo.org.
94
95 License
96 =======
97
98 Copyright 2010 Gentoo Foundation, Inc; referenced text
99 belongs to its owner(s).
100
101 The contents of this document are licensed under the
102 Creative Commons - Attribution / Share Alike license.
103
104 http://creativecommons.org/licenses/by-sa/2.5

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