cve/2021/CVE-2021-3998.md

### [CVE-2021-3998](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3998)
![](https://img.shields.io/static/v1?label=Product&message=glibc&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20Affects%20glibc%20v2.33%20and%20above.%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-125%20-%20Out-of-bounds%20Read&color=brighgreen)

### Description

A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.

### POC

#### Reference
- https://www.openwall.com/lists/oss-security/2022/01/24/4

#### Github
- https://github.com/ARPSyndicate/cvemon