cve/2021/CVE-2021-33644.md

### [CVE-2021-33644](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33644)
![](https://img.shields.io/static/v1?label=Product&message=libtar&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C1.2.21%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-125%3A%20Out-of-bounds%20Read&color=brightgreen)

### 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_longname, causing an out-of-bounds read.

### POC

#### Reference
No PoCs from references.

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