The (1) order and (2) group methods in Zend_Db_Select in the Zend Framework before 1.12.20 might allow remote attackers to conduct SQL injection attacks by leveraging failure to remove comments from an SQL statement before validation.
https://security.gentoo.org/glsa/201804-10
https://lists.debian.org/debian-lts-announce/2018/06/msg00012.html