CVEs-PoC/2020/CVE-2020-15093.md

### [CVE-2020-15093](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15093)
![](https://img.shields.io/static/v1?label=Product&message=tough&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-347%3A%20Improper%20Verification%20of%20Cryptographic%20Signature&color=brighgreen)

### Description

The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A fix is available in version 0.7.1. CVE-2020-6174 is assigned to the same vulnerability in the TUF reference implementation.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Artisan-Lab/Rust-memory-safety-bugs