The escapeLike function in sqlsrv/database.inc in the Drupal 7 driver for SQL Server and SQL Azure 7.x-1.x before 7.x-1.4 does not properly escape certain characters, which allows remote attackers to execute arbitrary SQL commands via vectors involving a module using the db_like function.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.