CVE-2021-40346 PoC — Haproxy HAProxy 输入验证错误漏洞

Source

https://github.com/donky16/CVE-2021-40346-POC

Associated Vulnerability

Title: Haproxy HAProxy 输入验证错误漏洞 (CVE-2021-40346)
Description:An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs.

Description

CVE-2021-40346 integer overflow enables http smuggling

Readme

# CVE-2021-40346-POC #

CVE-2021-40346 integer overflow enables http smuggling

整数溢出导致的http请求走私

中文分析：[HAProxy请求走私漏洞（CVE-2021-40346）分析](https://forum.butian.net/share/694)

Reference: https://jfrog.com/blog/critical-vulnerability-in-haproxy-cve-2021-40346-integer-overflow-enables-http-smuggling/

## Build ##
```sh
git clone https://github.com/donky16/CVE-2021-40346-POC.git
cd CVE-2021-40346-POC 
docker-compose build 
docker-compose up -d
```
## Exploit ##

![image-20210910162235855](ReadMe.assets/image-20210910162235855.png)

File Snapshot

Remarks

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