Gentoo Archives: gentoo-announce

From: Sam James <sam@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 202011-10 ] tmux: Buffer overflow
Date: Wed, 11 Nov 2020 03:59:57
Message-Id: 221CB6B0-A568-4A01-89D8-C24DE83B7E34@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 202011-10
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4 https://security.gentoo.org/
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6
7 Severity: Normal
8 Title: tmux: Buffer overflow
9 Date: November 11, 2020
10 Bugs: #753206
11 ID: 202011-10
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14
15 Synopsis
16 ========
17
18 A buffer overflow in tmux might allow remote attacker(s) to execute
19 arbitrary code.
20
21 Background
22 ==========
23
24 tmux is a terminal multiplexer.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 app-misc/tmux < 3.1c >= 3.1c
33
34 Description
35 ===========
36
37 A flaw in tmux's handling of escape characters was discovered which may
38 allow a buffer overflow.
39
40 Impact
41 ======
42
43 A remote attacker could possibly execute arbitrary code with the
44 privileges of the process, or cause a Denial of Service condition.
45
46 Workaround
47 ==========
48
49 There is no known workaround at this time.
50
51 Resolution
52 ==========
53
54 All tmux users should upgrade to the latest version:
55
56 # emerge --sync
57 # emerge --ask --oneshot --verbose ">=app-misc/tmux-3.1c"
58
59 References
60 ==========
61
62 [ 1 ] CVE-2020-27347
63 https://nvd.nist.gov/vuln/detail/CVE-2020-27347
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/202011-10
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 2020 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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