Gentoo Archives: gentoo-announce

From: Thomas Deutschmann <whissi@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 202104-05 ] GRUB: Multiple vulnerabilities
Date: Sat, 01 May 2021 00:07:56
Message-Id: ff8e5805-0a12-b178-6bc8-2e832d0abea3@gentoo.org
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2 Gentoo Linux Security Advisory GLSA 202104-05
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4 https://security.gentoo.org/
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6
7 Severity: Normal
8 Title: GRUB: Multiple vulnerabilities
9 Date: April 30, 2021
10 Bugs: #734654, #773991
11 ID: 202104-05
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14
15 Synopsis
16 ========
17
18 Multiple vulnerabilities have been found in GRUB, the worst might allow
19 for circumvention of UEFI Secure Boot.
20
21 Background
22 ==========
23
24 GNU GRUB is a multiboot boot loader used by most Linux systems.
25
26 Affected packages
27 =================
28
29 -------------------------------------------------------------------
30 Package / Vulnerable / Unaffected
31 -------------------------------------------------------------------
32 1 sys-devel/grub < 2.06_rc1 >= 2.06_rc1
33
34 Description
35 ===========
36
37 Multiple vulnerabilities have been discovered in GRUB. Please review
38 the CVE identifiers referenced below for details.
39
40 Impact
41 ======
42
43 Please review the referenced CVE identifiers for details.
44
45 Workaround
46 ==========
47
48 There is no known workaround at this time.
49
50 Resolution
51 ==========
52
53 All GRUB users should upgrade to the latest version:
54
55 # emerge --sync
56 # emerge --ask --oneshot --verbose ">=sys-devel/grub-2.06_rc1"
57
58 After upgrading, make sure to run the grub-install command with options
59 appropriate for your system. See the GRUB Quick Start guide in the
60 references below for examples. Your system will be vulnerable until
61 this action is performed.
62
63 References
64 ==========
65
66 [ 1 ] CVE-2020-10713
67 https://nvd.nist.gov/vuln/detail/CVE-2020-10713
68 [ 2 ] CVE-2020-14308
69 https://nvd.nist.gov/vuln/detail/CVE-2020-14308
70 [ 3 ] CVE-2020-14309
71 https://nvd.nist.gov/vuln/detail/CVE-2020-14309
72 [ 4 ] CVE-2020-14310
73 https://nvd.nist.gov/vuln/detail/CVE-2020-14310
74 [ 5 ] CVE-2020-14311
75 https://nvd.nist.gov/vuln/detail/CVE-2020-14311
76 [ 6 ] CVE-2020-14372
77 https://nvd.nist.gov/vuln/detail/CVE-2020-14372
78 [ 7 ] CVE-2020-15705
79 https://nvd.nist.gov/vuln/detail/CVE-2020-15705
80 [ 8 ] CVE-2020-15706
81 https://nvd.nist.gov/vuln/detail/CVE-2020-15706
82 [ 9 ] CVE-2020-15707
83 https://nvd.nist.gov/vuln/detail/CVE-2020-15707
84 [ 10 ] CVE-2020-25632
85 https://nvd.nist.gov/vuln/detail/CVE-2020-25632
86 [ 11 ] CVE-2020-25647
87 https://nvd.nist.gov/vuln/detail/CVE-2020-25647
88 [ 12 ] CVE-2020-27749
89 https://nvd.nist.gov/vuln/detail/CVE-2020-27749
90 [ 13 ] CVE-2020-27779
91 https://nvd.nist.gov/vuln/detail/CVE-2020-27779
92 [ 14 ] CVE-2021-20225
93 https://nvd.nist.gov/vuln/detail/CVE-2021-20225
94 [ 15 ] CVE-2021-20233
95 https://nvd.nist.gov/vuln/detail/CVE-2021-20233
96 [ 16 ] GRUB Quick Start guide
97 https://wiki.gentoo.org/wiki/GRUB2_Quick_Start
98
99 Availability
100 ============
101
102 This GLSA and any updates to it are available for viewing at
103 the Gentoo Security Website:
104
105 https://security.gentoo.org/glsa/202104-05
106
107 Concerns?
108 =========
109
110 Security is a primary focus of Gentoo Linux and ensuring the
111 confidentiality and security of our users' machines is of utmost
112 importance to us. Any security concerns should be addressed to
113 security@g.o or alternatively, you may file a bug at
114 https://bugs.gentoo.org.
115
116 License
117 =======
118
119 Copyright 2021 Gentoo Foundation, Inc; referenced text
120 belongs to its owner(s).
121
122 The contents of this document are licensed under the
123 Creative Commons - Attribution / Share Alike license.
124
125 https://creativecommons.org/licenses/by-sa/2.5

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