Vulnerability · Published May 3, 2022 · Assigned by icscert
CVE-2021-27433ARM mbed-ualloc memory library Integer Overflow or Wraparound
High 7.3
In plain English
A high-severity integer overflow in mbed-ualloc memory library from ARM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.8%top 21.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
ARM mbed-ualloc memory library version 1.3.0 is vulnerable to integer wrap-around in function mbed_krbs, 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)
| Vendor | Product | Versions |
|---|---|---|
| ARM | mbed-ualloc memory library | 1.3.0 |
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