cve/2021/CVE-2021-33643.md

### [CVE-2021-33643](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33643)
![](https://img.shields.io/static/v1?label=Product&message=libtar&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-125%3A%20Out-of-bounds%20Read&color=brighgreen)

### Description

An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/em1ga3l/cve-publicationdate-extractor