cve/2021/CVE-2021-38153.md

### [CVE-2021-38153](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38153)
![](https://img.shields.io/static/v1?label=Product&message=Apache%20Kafka&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Apache%20Kafka%202.0.x%3C%3D%202.0.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-203%20Observable%20Discrepancy&color=brighgreen)

### Description

Some components in Apache Kafka use `Arrays.equals` to validate a password or key, which is vulnerable to timing attacks that make brute force attacks for such credentials more likely to be successful. Users should upgrade to 2.8.1 or higher, or 3.0.0 or higher where this vulnerability has been fixed. The affected versions include Apache Kafka 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.4.0, 2.4.1, 2.5.0, 2.5.1, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.7.1, and 2.8.0.

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/aws/aws-msk-iam-auth