Gentoo Archives: gentoo-announce

From: Thomas Deutschmann <whissi@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 202105-17 ] rxvt-unicode: User-assisted execution of arbitrary code
Date: Wed, 26 May 2021 09:00:00
Message-Id: 7a0c02ca-2fa5-e1ab-eb69-aef8dbfa8e71@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 202105-17
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4 https://security.gentoo.org/
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6
7 Severity: Normal
8 Title: rxvt-unicode: User-assisted execution of arbitrary code
9 Date: May 26, 2021
10 Bugs: #790782
11 ID: 202105-17
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14
15 Synopsis
16 ========
17
18 A vulnerability in rxvt-unicode may allow a remote attacker to execute
19 arbitrary code.
20
21 Background
22 ==========
23
24 rxvt-unicode (urxvt) is a clone of the rxvt terminal emulator.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 x11-terms/rxvt-unicode < 9.22-r9 >= 9.22-r9
33
34 Description
35 ===========
36
37 It was discovered that rxvt-unicode did not properly handle certain
38 escape sequences.
39
40 Impact
41 ======
42
43 A remote attacker could entice a user to run a program where attacker
44 controls the output inside a rxvt terminal window, possibly resulting
45 in execution of arbitrary code with the privileges of the process or a
46 Denial of Service condition.
47
48 Workaround
49 ==========
50
51 There is no known workaround at this time.
52
53 Resolution
54 ==========
55
56 All rxvt-unicode users should upgrade to the latest version:
57
58 # emerge --sync
59 # emerge --ask --oneshot --verbose ">=x11-terms/rxvt-unicode-9.22-r9"
60
61 References
62 ==========
63
64 [ 1 ] CVE-2021-33477
65 https://nvd.nist.gov/vuln/detail/CVE-2021-33477
66
67 Availability
68 ============
69
70 This GLSA and any updates to it are available for viewing at
71 the Gentoo Security Website:
72
73 https://security.gentoo.org/glsa/202105-17
74
75 Concerns?
76 =========
77
78 Security is a primary focus of Gentoo Linux and ensuring the
79 confidentiality and security of our users' machines is of utmost
80 importance to us. Any security concerns should be addressed to
81 security@g.o or alternatively, you may file a bug at
82 https://bugs.gentoo.org.
83
84 License
85 =======
86
87 Copyright 2021 Gentoo Foundation, Inc; referenced text
88 belongs to its owner(s).
89
90 The contents of this document are licensed under the
91 Creative Commons - Attribution / Share Alike license.
92
93 https://creativecommons.org/licenses/by-sa/2.5

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