Vigil@nce - Drupal Core: privilege escalation via JSON-API PATCH Requests
August 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
Impacted products: Drupal Core, IBM API Connect.
Severity: 2/4.
Consequences: data creation/edition, data deletion.
Provenance: user account.
Confidence: confirmed by the editor (5/5).
Creation date: 18/06/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can bypass restrictions via JSON:API PATCH Requests of
Drupal Core, in order to escalate his privileges.
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