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Incident report
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Resolution: Duplicate
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Minor
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None
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4.4.0alpha1
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None
Zabbix before 4.2 allows User Enumeration. It is possible to enumerate application username based on different server responses (Login name or password is incorrect, Account is blocked for N seconds, No permissions for system access) using the requests to login.
API Request
POST /zabbix/api_jsonrpc.php HTTP/1.1
Host: company
Content-Type: application/json-rpc
{
"jsonrpc": "2.0",
"method": "user.login",
"params": {
"user": "Admin",
"password": "zabbix"
},
"id": 1
}
Web Interface Request
POST /zabbix/index.php HTTP/1.1 Host: company Content-Type: application/x-www-form-urlencoded name=Admin&password=password&autologin=1&enter=Sign+in
- duplicates
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ZBX-5842 exploit to check for an existence of the user with specified username
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- Closed
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