SQL injection in Plone - CVE-2020-7939

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data in DTML or in connection objects. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

How to mitigate CVE-2020-7939

Sources

• http://www.openwall.com/lists/oss-security/2020/01/24/1
• https://plone.org/security/hotfix/20200121
• https://plone.org/security/hotfix/20200121/sql-injection-in-dtml-or-in-connection-objects
• https://www.openwall.com/lists/oss-security/2020/01/22/1