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Ubuntu.comUB:CVE-2022-28735HistoryJul 20, 2023 - 12:00 a.m.
CVE-2022-28735
2023-07-2000:00:00
ubuntu.com
ubuntu.com
17
grub2
shim_lock verifier
unverified files
secure boot
trust-chain
CVSS3
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0
Percentile
5.1%
The GRUB2’s shim_lock verifier allows non-kernel files to be loaded on
shim-powered secure boot systems. Allowing such files to be loaded may lead
to unverified code and modules to be loaded in GRUB2 breaking the secure
boot trust-chain.
Bugs
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | grub2-signed | < 1.187.3~18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | grub2-signed | < 1.187.3~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | grub2-signed | < 1.187.3~22.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | grub2-signed | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | grub2-signed | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14.1 | UNKNOWN |
| ubuntu | 16.04 | noarch | grub2-unsigned | < any | UNKNOWN |
Related
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2023-11-08 02:07:28
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2022-12-28 00:00:00
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2022-06-22 01:25:16
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2022-06-16 13:17:13
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2022-06-16 00:00:00
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2022-06-16 00:00:00
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amazon
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avleonov
avleonov
CVSS3
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0
Percentile
5.1%
Related for UB:CVE-2022-28735