Hi, I'm Merroun Lahcen from DevSecure — we specialize in uncovering hidden vulnerabilities that pose real-world risks to modern web applications.
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the idea is when attacker try to change support contact user email with new attacker email, they send to you ( attacker inbox )
the 2 emails 1 of attacker and second for support thats want to change
the idea is this request it enumerat support users with just the id ( based on id )
and whene you send the request you could get full informations about this support user in userListSearch endpoint
After my testing i find thats some Company auditors users you can make you email as default if there is no primary contact in there account and you can take over there account by send rest email and i have a poc
you will find details in the bottom
1/ you need to be loged in as admin go to admin.company.com
2/ go to this endpoint with put request
PUT /admin/redactedpath/settings HTTP/2
Host: admin.company.com
{"idUser":1,"idUser":"HERE_PUT_THE_ID_OF_SSUPORT","fullName":"Name","email":"test@test.com",...}
for geting this users info you could make simple search in this endpoint and you will find theme
POST /admin/redactedpath/userListSearch HTTP/2
i dont want to make alot of acount take over i made just 1 for POC
account take over for {"userId":xxxxxx
"name":"XXXX XXX"
"email":"xxx.xxx@attacker.com"
,...}
now the email is xxx.xxx@attacker.com and the PASSWORD is MyNewPassword
Impact
Massive account take over + informations disclousure