Squiz Matrix CMS Authenticated Privilege Escalation through IDOR
During a recent engagement, Trustwave SpiderLabs discovered an Indirect Object Reference (IDOR) vulnerability within Squiz Matrix CMS which would allow any low privileged user to change the contact details of any other user on a Squiz Matrix instance (including administrators). An attacker exploiting the vulnerability could change an administrator’s email address to an attacker-controlled email address after which the attacker could reset the administrator’s password.