CVEs-PoC/2021/CVE-2021-3345.md

### [CVE-2021-3345](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3345)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.

### POC

#### Reference
- https://www.oracle.com//security-alerts/cpujul2021.html

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/MLGRadish/CVE-2021-3345
- https://github.com/NaInSec/CVE-PoC-in-GitHub
- https://github.com/SYRTI/POC_to_review
- https://github.com/SpiralBL0CK/CVE-2021-3345
- https://github.com/WhooAmii/POC_to_review
- https://github.com/developer3000S/PoC-in-GitHub
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/manas3c/CVE-POC
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/soosmile/POC
- https://github.com/trhacknon/Pocingit
- https://github.com/whoforget/CVE-POC
- https://github.com/youwizard/CVE-POC
- https://github.com/zecool/cve