Gentoo Archives: gentoo-announce

From: Chris Reffett <creffett@g.o>
To: gentoo-announce@g.o
Subject: [gentoo-announce] [ GLSA 201309-07 ] libotr: Arbitrary code execution
Date: Sun, 15 Sep 2013 04:49:32
Message-Id: 52353BE8.9070005@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201309-07
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4 http://security.gentoo.org/
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6
7 Severity: High
8 Title: libotr: Arbitrary code execution
9 Date: September 15, 2013
10 Bugs: #430486
11 ID: 201309-07
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14
15 Synopsis
16 ========
17
18 A buffer overflow vulnerability in libotr could allow a remote attacker
19 to execute arbitrary code or cause a Denial of Service condition.
20
21 Background
22 ==========
23
24 libotr is a portable off-the-record messaging library.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 net-libs/libotr < 3.2.1 >= 3.2.1
33
34 Description
35 ===========
36
37 Multiple heap-based buffer overflows are present in the Base64 decoder
38 of libotr.
39
40 Impact
41 ======
42
43 A remote attacker could send a specially crafted OTR message, resulting
44 in arbitrary code execution with the privileges of the process or a
45 Denial of Service condition.
46
47 Workaround
48 ==========
49
50 There is no known workaround at this time.
51
52 Resolution
53 ==========
54
55 All libotr users should upgrade to the latest version:
56
57 # emerge --sync
58 # emerge --ask --oneshot --verbose ">=net-libs/libotr-3.2.1"
59
60 References
61 ==========
62
63 [ 1 ] CVE-2012-3461
64 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3461
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-201309-07.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 2013 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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