Gentoo Archives: gentoo-announce

From: Aaron Bauman <bman@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 201810-03 ] OpenSSH: User enumeration vulnerability
Date: Sat, 06 Oct 2018 17:10:09
Message-Id: 20181006170316.GD31755@monkey
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2 Gentoo Linux Security Advisory GLSA 201810-03
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4 https://security.gentoo.org/
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6
7 Severity: Low
8 Title: OpenSSH: User enumeration vulnerability
9 Date: October 06, 2018
10 Bugs: #664264
11 ID: 201810-03
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14
15 Synopsis
16 ========
17
18 A vulnerability in OpenSSH might allow remote attackers to determine
19 valid usernames.
20
21 Background
22 ==========
23
24 OpenSSH is a complete SSH protocol implementation that includes SFTP
25 client and server support.
26
27 Affected packages
28 =================
29
30 -------------------------------------------------------------------
31 Package / Vulnerable / Unaffected
32 -------------------------------------------------------------------
33 1 net-misc/openssh < 7.7_p1-r8 >= 7.7_p1-r8
34
35 Description
36 ===========
37
38 It was discovered that OpenSSH was prone to a user enumeration
39 vulnerability.
40
41 Impact
42 ======
43
44 A remote attacker could conduct user enumeration.
45
46 Workaround
47 ==========
48
49 There is no known workaround at this time.
50
51 Resolution
52 ==========
53
54 All OpenSSH users should upgrade to the latest version:
55
56 # emerge --sync
57 # emerge --ask --oneshot --verbose ">=net-misc/openssh-7.7_p1-r8"
58
59 References
60 ==========
61
62 [ 1 ] CVE-2018-15473
63 https://nvd.nist.gov/vuln/detail/CVE-2018-15473
64
65 Availability
66 ============
67
68 This GLSA and any updates to it are available for viewing at
69 the Gentoo Security Website:
70
71 https://security.gentoo.org/glsa/201810-03
72
73 Concerns?
74 =========
75
76 Security is a primary focus of Gentoo Linux and ensuring the
77 confidentiality and security of our users' machines is of utmost
78 importance to us. Any security concerns should be addressed to
79 security@g.o or alternatively, you may file a bug at
80 https://bugs.gentoo.org.
81
82 License
83 =======
84
85 Copyright 2018 Gentoo Foundation, Inc; referenced text
86 belongs to its owner(s).
87
88 The contents of this document are licensed under the
89 Creative Commons - Attribution / Share Alike license.
90
91 https://creativecommons.org/licenses/by-sa/2.5

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