CVEs-PoC/2021/CVE-2021-3402.md

### [CVE-2021-3402](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3402)
![](https://img.shields.io/static/v1?label=Product&message=libyara&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-190&color=brighgreen)

### Description

An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earlier could allow an attacker to either cause denial of service or information disclosure via a malicious Mach-O file. Affects all versions before libyara 4.0.4

### POC

#### Reference
- https://www.openwall.com/lists/oss-security/2021/01/29/2
- https://www.x41-dsec.de/lab/advisories/x41-2021-001-yara/

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