Cookies exchanged between the web server and the client, such as session cookies, must have cookie properties set to prohibit client-side scripts from reading the cookie data.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-206437 | SRG-APP-000439 | SRG-APP-000439-WSR-000154 | SV-206437r961632_rule | 2025-02-12 | 4 |
| Description |
|---|
| A cookie can be read by client-side scripts easily if cookie properties are not set properly. By allowing cookies to be read by the client-side scripts, information such as session identifiers could be compromised and used by an attacker who intercepts the cookie. Setting cookie properties (i.e. HttpOnly property) to disallow client-side scripts from reading cookies better protects the information inside the cookie. |
| ℹ️ Check |
|---|
| Review the web server documentation and deployed configuration to determine how to disable client-side scripts from reading cookies. If the web server is not configured to disallow client-side scripts from reading cookies, this is a finding. |
| ✔️ Fix |
|---|
| Configure the web server to disallow client-side scripts the capability of reading cookie information. |