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ubuntucveUbuntu.comUB:CVE-2022-47630
HistoryJan 16, 2023 - 12:00 a.m.

CVE-2022-47630

2023-01-1600:00:00
ubuntu.com
ubuntu.com
11
trusted firmware-a
cve-2022-47630
x.509 parser
out-of-bounds read
get_ext
auth_nvctr

7.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H

0.001 Low

EPSS

Percentile

50.0%

Trusted Firmware-A through 2.8 has an out-of-bounds read in the X.509
parser for parsing boot certificates. This affects downstream use of
get_ext and auth_nvctr. Attackers might be able to trigger dangerous read
side effects or obtain sensitive information about microarchitectural
state.

Notes

Author Note
rodrigo-zaiden claimed to only affect custom usages of get_ext and auth_nvctr interfaces.

7.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H

0.001 Low

EPSS

Percentile

50.0%