Rule Definition
If read access is not properly restricted, then attackers can steal the sensitive information. If write access is not properly restricted, then attackers can modify and possibly delete the data, causing incorrect results and possibly a denial of service.
Remediation
Do not provide a domain with wildcard access
Violation Code Sample
// .example.com is not recommended
document.cookie = "name=test; domain=.example.com";
Fixed Code Sample
// explicit secure.example.com domain is recommended
document.cookie = "name=test; domain=secure.example.com";
Reference
https://cwe.mitre.org/data/definitions/287.html
https://www.owasp.org/index.php/Top_10_2013-A6-Sensitive_Data_Exposure
https://www.owasp.org/index.php/Top_10-2017_A3-Sensitive_Data_Exposure
Related Technologies
Technical Criterion
Secure Coding - Weak Security Features
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