Cross-site request forgery in CMS Made Simple - CVE-2016-7904

Detailed vulnerability description

The vulnerability allows a remote attacker to perform CSRF attacks.

The vulnerability exists due to improper validation of the HTTP request origin in "admin/adduser.php" script. A remote attacker can create a specially specially crafted web page, trick the authenticated victim into visiting it, perform cross-site request forgery attack and hijack the authentication of administrators for requests that create accounts.

Successful exploitation of the vulnerability may allow an attacker to gain administrative access to vulnerable website.

How to mitigate CVE-2016-7904

Sources

• http://www.openwall.com/lists/oss-security/2017/01/16/1
• http://dev.cmsmadesimple.org/project/changelog/5392