CVE-2020-14343 PoC — PyYAML 输入验证错误漏洞

Source

https://github.com/j4k0m/loader-CVE-2020-14343

Associated Vulnerability

Title:PyYAML 输入验证错误漏洞 (CVE-2020-14343)
Description:A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.

Description

A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package.

Readme

# loader-CVE-2020-14343
A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package.

## Writeup:
- https://github.com/TebbaaX/CTFs/blob/main/HackerNewsBdarija-CTF-2022/loadder/Loader.md

File Snapshot

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