Gentoo Archives: gentoo-announce

From: Thomas Deutschmann <whissi@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 202009-12 ] ZeroMQ: Denial of service
Date: Sun, 13 Sep 2020 23:50:57
Message-Id: 2c3e8e1b-736b-0949-b25a-9cf4fe5f79db@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 202009-12
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4 https://security.gentoo.org/
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6
7 Severity: Normal
8 Title: ZeroMQ: Denial of service
9 Date: September 13, 2020
10 Bugs: #740574
11 ID: 202009-12
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14
15 Synopsis
16 ========
17
18 A vulnerability in ZeroMQ could lead to a Denial of Service condition.
19
20 Background
21 ==========
22
23 Looks like an embeddable networking library but acts like a concurrency
24 framework.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 net-libs/zeromq < 4.3.3 >= 4.3.3
33
34 Description
35 ===========
36
37 It was discovered that ZeroMQ does not properly handle connecting peers
38 before a handshake is completed.
39
40 Impact
41 ======
42
43 An unauthenticated remote attacker able to connect to a ZeroMQ
44 endpoint, even with CURVE encryption/authentication enabled, can cause
45 a 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 ZeroMQ users should upgrade to the latest version:
56
57 # emerge --sync
58 # emerge --ask --oneshot --verbose ">=net-libs/zeromq-4.3.3"
59
60 References
61 ==========
62
63 [ 1 ] CVE-2020-15166
64 https://nvd.nist.gov/vuln/detail/CVE-2020-15166
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 https://security.gentoo.org/glsa/202009-12
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 2020 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 https://creativecommons.org/licenses/by-sa/2.5

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