CVE-2021-27138

2021-02-1700:00:00

ubuntu.com

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

34.7%

JSON

The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit
addresses in a FIT.

Bugs

<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=983269>

Notes

Author	Note
mdeslaur	This fix changes behaviour and would introduce regressions in existing installations. We will not be fixing this issue in Ubuntu stable releases. See here for an example: https://lore.kernel.org/lkml/[email protected]/ https://www.linux4sam.org/bin/view/Linux4SAM/HasherrorwhenbootingFITimage https://github.com/linux4sam/dt-overlay-at91/commit/7ad311899af48efbb43f0e3ac935da5981bd4b2d b6f4c757959f8850e1299a77c8e5713da78e8ec0 is the complete patch set that fixes both CVE-2021-27097 and CVE-2021-27138

Author

Note

mdeslaur

This fix changes behaviour and would introduce regressions in existing installations. We will not be fixing this issue in Ubuntu stable releases. See here for an example: https://lore.kernel.org/lkml/[email protected]/ https://www.linux4sam.org/bin/view/Linux4SAM/HasherrorwhenbootingFITimage https://github.com/linux4sam/dt-overlay-at91/commit/7ad311899af48efbb43f0e3ac935da5981bd4b2d b6f4c757959f8850e1299a77c8e5713da78e8ec0 is the complete patch set that fixes both CVE-2021-27097 and CVE-2021-27138