This code serves as both a vulnerability detector and a proof of concept for CVE-2023-36845. It executes the phpinfo() function on the login page of the target device, allowing to inspect the PHP configuration. This script also has the option to save the phpinfo() output to a file for further analysis.
56c0a0ad9dba5be91bcf88dbed7e2234e764bf5d6166e8250dfe5f1920543e02This Metasploit module exploits a PHP environment variable manipulation vulnerability affecting Juniper SRX firewalls and EX switches. The affected Juniper devices running FreeBSD and every FreeBSD process can access their stdin by opening /dev/fd/0. The exploit also makes use of two useful PHP features. The first being auto_prepend_file which causes the provided file to be added using the require function. The second PHP function is allow_url_include which allows the use of URL-aware fopen wrappers. By enabling allow_url_include, the exploit can use any protocol wrapper with auto_prepend_file. The module then uses data:// to provide a file inline which includes the base64 encoded PHP payload. By default this exploit returns a session confined to a FreeBSD jail with limited functionality. There is a datastore option JAIL_BREAK, that when set to true, will steal the necessary tokens from a user authenticated to the J-Web application, in order to overwrite the root password hash. If there is no user authenticated to the J-Web application this method will not work. The module then authenticates with the new root password over SSH and then rewrites the original root password hash to /etc/master.passwd.
23552b23e1cc0e2022181944f8894c8f7203e6893e7d1127561c3ffd867b9517A proof of concept exploit for chaining four CVEs to achieve remote code execution in Juniper JunOS within SRX and EX Series products.
ab0b70a7cc6a4a947d8faceced29674fb6ad7bf45e8a329120e642cb825e3c05
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