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Pyload RCE (CVE-2024-39205) with js2py sandbox escape (CVE-2024-28397)

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Pyload RCE (CVE-2024-39205) with js2py sandbox escape (CVE-2024-28397)

Disclosed
10/28/2024
Created
11/15/2024

Description

CVE-2024-28397 is sandbox escape in js2py (<=0.74) which is a popular python package that can evaluate javascript code inside a python interpreter. The vulnerability allows for an attacker to obtain a reference to a python object in the js2py environment enabling them to escape the sandbox, bypass pyimport restrictions and execute arbitrary commands on the host. At the time of writing no patch has been released, version 0.74 is the latest version of js2py which was released Nov 6, 2022. CVE-2024-39205 is an remote code execution vulnerability in Pyload (<=0.5.0b3.dev85) which is an open-source download manager designed to automate file downloads from various online sources. Pyload is vulnerable because it exposes the vulnerable js2py functionality mentioned above on the /flash/addcrypted2 API endpoint. This endpoint was designed to only accept connections from localhost but by manipulating the HOST header we can bypass this restriction in order to access the API to achieve unauth RCE.

Author(s)

  • Marven11
  • Spencer McIntyre
  • jheysel-r7

Platform

Linux,Unix

Architectures

cmd, x86, x64

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/linux/http/pyload_js2py_cve_2024_39205
msf exploit(pyload_js2py_cve_2024_39205) > show targets
    ...targets...
msf exploit(pyload_js2py_cve_2024_39205) > set TARGET < target-id >
msf exploit(pyload_js2py_cve_2024_39205) > show options
    ...show and set options...
msf exploit(pyload_js2py_cve_2024_39205) > exploit

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