CVE-2021-27435 Information

Description

ARM mbed product Version 6.3.0 is vulnerable to integer wrap-around in malloc_wrapper function which can lead to arbitrary memory allocation resulting in unexpected behavior such as a crash or a remote code injection/execution.

CVSS Vector

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

Reference

https://github.com/ARMmbed/mbed-os/pull/14408 https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8