Extending Justice for Sex Crime Victims Act of 2017 This bill amends the federal criminal code to revise the statute of limitations for a victim of a human trafficking offense or federal sexual offense to file a civil action to recover damages. Under current law, the statute of limitations is 10 years from the date the cause of action arose. This bill sets a 10-year statute of limitations from the date the victim discovers the offense or injury. Additionally, it extends the statute of limitations for a minor victim of a federal sex offense to file a civil action to 10 years (currently 3 years) from the date such individual reaches age 18.