JVN#67881316: Multiple vulnerabilities in baserCMS

baserCMS provided by baserCMS Users Community is an opensource content management system. baserCMS contains multiple vulnerabilities listed below.

Command injection (CWE-94) - CVE-2018-0569

Cross-site scripting (CWE-79) - CVE-2018-0570

Unrestricted Upload of File with Dangerous Type in upload file management function (CWE-434) - CVE-2018-0571

Restrict access permissions failure in contents management function (CWE-264) - CVE-2018-0572

Restrict access permissions failture for a content with a period being public is expired (CWE-264) - CVE-2018-0573

Cross-site scripting in theme management function (CWE-79) - CVE-2018-0574

Restrict access permissions failure in the function to attach files in mail form (CWE-264) - CVE-2018-0575

Impact

• A remote attacker may execute arbitrary code with the operation manager privilege - CVE-2018-0569
• An attacker who can log in to the product as a site operator privilege may execute arbitrary OS commands - CVE-2018-0570
• An attacker who can log in to the product as a site operator privilege may upload arbitrary files - CVE-2018-0571
• An attacker who can log in to the product as a site operator privilege may view or alter a restricted content - CVE-2018-0572
• A remote attacker may view a file which is uploaded by a site user - CVE-2018-0573
• An arbitrary script may be executed on the user’s web browser where the user accesses the theme management function - CVE-2018-0574
• A remote attacker may view a file which is uploaded by a site user. - CVE-2018-0575

Solution

Solution for CVE-2018-0570, CVE-2018-0571, CVE-2018-0573, CVE-2018-0574, and CVE-2018-0575：
Update the software
Update to the latest version according to the information provided by the developer.
According to the developer, CVE-2018-0573 and CVE-2018-0575 vulnerabilities do not exist if the product has been successfully installed. Those 2 vulnerabilities exist only in the situation where the installation of the product failed with issues such as access restrictions, etc.

Solution for CVE-2018-0569:
Update the software and then configure a user authentication properly
Update the software first, and then set a user authentication enabled/disabled. If a user authentication is enabled, a system administrator’s privilege is required to save a script in an article.
The developer states that all authentications besides a system administrator’s authentication becomes disabled, and then setting respective authentications enabled/disabled appropriately becomes possible after updating the software to the latest version.
All users authentications are enabled if installing the software for the first time using the latest installer.

Solution for CVE-2018-0572:
Apply a Workaround
When restricting access control using contents management function, be sure to register all URLs of the pages that need to be accessed.
For more information, refer to the developer’s website.

Products Affected

• baserCMS 4.1.0.1 and earlier versions
• baserCMS 3.0.15 and earlier versions