PT-2022-9820 · Unknown · Mbed-Ualloc

Published 2022-05-03 · Updated 2022-05-12 · CVE-2021-27433

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions mbed-ualloc memory library version 1.3.0

Description The issue is related to an integer wrap-around in the mbed krbs function, which can cause arbitrary memory allocation. This may result in unexpected behavior, including crashes or potentially allowing remote code injection/execution.

Recommendations For version 1.3.0, consider disabling the mbed krbs function as a temporary workaround until a patch is available. Restrict access to sensitive operations to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2021-27433

Affected Products

Mbed-Ualloc

References · 4

• https://github.com/ARMmbed/mbed-os/pull/14408 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-27433 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27433 · Vendor Advisory
• https://cisa.gov/uscert/ics/advisories/icsa-21-119-04 · Note