Vulnerability · Published May 3, 2022 · Assigned by icscert
CVE-2021-27435ARM mbed Integer Overflow or Wraparound
High 7.3
In plain English
A high-severity integer overflow in mbed from ARM. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 79% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.9%top 20.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 x_refsource_CONFIRM
- https://github.com/ARMmbed/mbed-os/pull/14408 x_refsource_CONFIRM