PT-2022-9821 · Arm · Arm Mbed

Published 2022-05-03 · Updated 2022-05-13 · CVE-2021-27435

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 ARM mbed product version 6.3.0

Description The issue is related to an integer wrap-around in the malloc wrapper function, which can lead to arbitrary memory allocation. This can result in unexpected behavior, such as a crash or remote code injection/execution.

Recommendations For ARM mbed product version 6.3.0, consider disabling the malloc wrapper function as a temporary workaround until a patch is available. Restrict access to memory allocation functions to minimize the risk of exploitation.

Exploit

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2021-27435

Affected Products

Arm Mbed

References · 6

• 🔥 https://github.com/ARMmbed/mbed-os/pull/14408 · Exploit
• https://osv.dev/vulnerability/CVE-2021-27435 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27435 · Security Note
• https://t.me/cvenotify/29655 · Telegram Post
• https://t.me/cibsecurity/41857 · Telegram Post
• https://cisa.gov/uscert/ics/advisories/icsa-21-119-04 · Note