Tapplock Smart Lock Insecure Direct Object Reference

`The server http://api.tapplock.com/ which servers as the api server for the tapplock smart lock is vulnerable to multiple authorization bypasses allowing horizontal escalation of privileges which could lead to the disclosure of all the info of all users and total compromise of every lock. The attacker could gain access to any lock, and retrieve PII (email and street address) of any user.  
There is a full write up available at : https://medium.com/@evstykas/totally-pwning-the-tapplock-smart-lock-the-api-way-c8d89915f025 <https://medium.com/@evstykas/totally-pwning-the-tapplock-smart-lock-the-api-way-c8d89915f025>  
  
  
Details  
  
Attack Vector: HTTP GET  
Prerequisites: Authentication (Authorization Header)  
CWE: Insecure Direct Object References, Authorization bypass through user-controlled key  
Technical Impact: Horizontal escalation of privilege (one user can view/modify information of all accounts)  
Vulnerable query URLs:  
http://api.tapplock.com/api/v1/locks/{email}?myOwner=0&page=1&size=10  
http://api.tapplock.com/api/v1/shareable_users/{email}?page=1&size=10  
http://api.tapplock.com/api/v1/shares/{email}?page=1&size=10  
Vulnerable parameter: email  
  
  
Attack Vector: HTTP GET  
Prerequisites: Authentication (Authorization Header)  
CWE: Insecure Direct Object References, Authorization bypass through user-controlled key  
Technical Impact: Horizontal escalation of privilege (one user can view/modify information of all accounts)  
Vulnerable query URLs:  
http://api.tapplock.com/api/v1/locks/{email}?myOwner=0&page=1&size=10  
http://api.tapplock.com/api/v1/shareable_users/{email}?page=1&size=10  
http://api.tapplock.com/api/v1/shares/{email}?page=1&size=10  
Vulnerable parameter: email  
  
Attack Vector: HTTP GET  
Prerequisites: Authentication (Authorization Header)  
CWE: Insecure Direct Object References, Authorization bypass through user-controlled key  
Technical Impact: Horizontal escalation of privilege (one user can view/modify information of all accounts)  
Vulnerable query URLs:  
http://api.tapplock.com/api/v1/finger_owners/{userUuid}?page=1&size=10  
http://api.tapplock.com/api/v1/unlock_records/bluetooth/{userUuid}?page=1&size=10  
http://api.tapplock.com/api/v1/finger_owners/{userUuid}?page=1&size=10  
Vulnerable parameter: userUuid  
  
Attack Vector: HTTP POST  
Prerequisites: Authentication (Authorization Header)  
CWE: Insecure Direct Object References, Authorization bypass through user-controlled key  
Technical Impact: Horizontal escalation of privilege (one user can view/modify information of all accounts)  
Vulnerable query URLs:  
http://api.tapplock.com/api/v1/users  
http://api.tapplock.com/api/v1/locks  
http://api.tapplock.com/api/v1/shareable_users  
http://api.tapplock.com/api/v1/shares  
http://api.tapplock.com/api/v1/finger_owners  
http://api.tapplock.com/api/v1/fingers  
http://api.tapplock.com/api/v1/fingers/actions/check  
http://api.tapplock.com/api/v1/unlock_records/bluetooth  
Vulnerable parameter: All the parameters that are posted on the json payload are not checked.  
  
  
Attack Vector: HTTP PATCH  
Prerequisites: Authentication (Authorization Header)  
CWE: Insecure Direct Object References, Authorization bypass through user-controlled key  
Technical Impact: Horizontal escalation of privilege (one user can view/modify information of all accounts)  
Vulnerable query URLs:  
http://api.tapplock.com/api/v1/users  
http://api.tapplock.com/api/v1/locks  
http://api.tapplock.com/api/v1/shareable_users  
Vulnerable parameter: All the parameters that are posted on the json payload are not checked.  
  
Attack Vector: HTTP DELETE  
Prerequisites: Authentication (Authorization Header)  
CWE: Insecure Direct Object References, Authorization bypass through user-controlled key  
Technical Impact: Horizontal escalation of privilege (one user can view/modify information of all accounts)  
Vulnerable query URLs:  
http://api.tapplock.com/api/v1/locks/{lockId}  
http://api.tapplock.com/api/v1/finger_owners/{uuid}  
http://api.tapplock.com/api/v1/shareable_users/{shareableUserId}  
http://api.tapplock.com/api/v1/shares/{shareId}  
http://api.tapplock.com/api/v1/fingers/{fingerprintId}  
  
Vulnerable parameter: All the parameters in {} are vulnerable.  
  
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