Gentoo Archives: gentoo-announce

From: Thomas Deutschmann <whissi@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 201701-05 ] BusyBox: Denial of Service
Date: Sun, 01 Jan 2017 15:38:52
Message-Id: 88ed8415-a057-73d3-df6e-858c6c0764a0@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 201701-05
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4 https://security.gentoo.org/
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6
7 Severity: Normal
8 Title: BusyBox: Denial of Service
9 Date: January 01, 2017
10 Bugs: #590478
11 ID: 201701-05
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14
15 Synopsis
16 ========
17
18 A vulnerability in BusyBox might allow remote attackers to cause a
19 Denial of Service condition.
20
21 Background
22 ==========
23
24 BusyBox is a set of tools for embedded systems and is a replacement for
25 GNU Coreutils.
26
27 Affected packages
28 =================
29
30 -------------------------------------------------------------------
31 Package / Vulnerable / Unaffected
32 -------------------------------------------------------------------
33 1 sys-apps/busybox < 1.25.1 >= 1.25.1
34
35 Description
36 ===========
37
38 The recv_and_process_client_pkt function in networking/ntpd.c in
39 BusyBox allows remote attackers to cause a Denial of Service (CPU and
40 bandwidth consumption) via a forged NTP packet, which triggers a
41 communication loop.
42
43 Impact
44 ======
45
46 A remote attacker might send a specially crafted package to a machine
47 running BusyBox ntpd, possibly resulting in a Denial of Service
48 condition.
49
50 Workaround
51 ==========
52
53 There is no known workaround at this time.
54
55 Resolution
56 ==========
57
58 All BusyBox users should upgrade to the latest version:
59
60 # emerge --sync
61 # emerge --ask --oneshot --verbose ">=sys-apps/busybox-1.25.1"
62
63 References
64 ==========
65
66 [ 1 ] CVE-2016-6301
67 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6301
68
69 Availability
70 ============
71
72 This GLSA and any updates to it are available for viewing at
73 the Gentoo Security Website:
74
75 https://security.gentoo.org/glsa/201701-05
76
77 Concerns?
78 =========
79
80 Security is a primary focus of Gentoo Linux and ensuring the
81 confidentiality and security of our users' machines is of utmost
82 importance to us. Any security concerns should be addressed to
83 security@g.o or alternatively, you may file a bug at
84 https://bugs.gentoo.org.
85
86 License
87 =======
88
89 Copyright 2017 Gentoo Foundation, Inc; referenced text
90 belongs to its owner(s).
91
92 The contents of this document are licensed under the
93 Creative Commons - Attribution / Share Alike license.
94
95 http://creativecommons.org/licenses/by-sa/2.5

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