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Malformed SPI in response for eswifi can corrupt kernel memory

High
d3zd3z published GHSA-hx4p-j86p-2mhr Apr 26, 2021

Package

zephyr (west)

Affected versions

1.14.2, 2.3.0

Patched versions

2.4.0

Description

Impact

A local attacker able to interfere with the physical SPI bus between the Host and target SoC may send a malformed SPI response that will corrupt kernel's memory in the Host MCU, thus potentially achieving local code execution with kernel privileges.

Patches

This has been fixed in:

For more information

If you have any questions or comments about this advisory:

embargo: 2020-10-07
zepsec: ZEPSEC-91
thanks: Ruben Santamarta, IOActive

Severity

High
7.1
/ 10

CVSS base metrics

Attack vector
Physical
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVE ID

CVE-2020-13600

Weaknesses