cve/2021/CVE-2021-27433.md

### [CVE-2021-27433](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27433)
![](https://img.shields.io/static/v1?label=Product&message=mbed-ualloc%20memory%20library&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%201.3.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-190%20Integer%20Overflow%20or%20Wraparound&color=brighgreen)

### 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.

### POC

#### Reference
- https://github.com/ARMmbed/mbed-os/pull/14408

#### Github
No PoCs found on GitHub currently.