CVE-2017-17916

Name	CVE-2017-17916
Description	DISPUTED SQL injection vulnerability in the 'find_by' method in Ruby on Rails 5.1.4 and earlier allows remote attackers to execute arbitrary SQL commands via the 'name' parameter. NOTE: The vendor disputes this issue because the documentation states that this method is not intended for use with untrusted input.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rails (PTS)	jessie	2:4.1.8-1+deb8u4	vulnerable
	jessie (security)	2:4.1.8-1+deb8u5	vulnerable
	stretch	2:4.2.7.1-1+deb9u1	vulnerable
	buster	2:5.2.2.1+dfsg-1	vulnerable
	bullseye, sid	2:5.2.3+dfsg-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rails	source	(unstable)	(unfixed)	unimportant

https://kay-malwarebenchmark.github.io/blog/ruby-on-rails-arbitrary-sql-injection/
All of those methods accept arbitrary SQL by design.