CVE-2017-17405

Ruby before 2.4.3 allows Net::FTP command injection. Net::FTP#get, getbinaryfile, gettextfile, put, putbinaryfile, and puttextfile use Kernel#open to open a local file. If the localfile argument starts with the "|" pipe character, the command following the pipe character is executed. The default value of localfile is File.basename(remotefile), so malicious FTP servers could cause arbitrary command execution.

Date published : 2017-12-15

http://www.securityfocus.com/bid/102204

https://www.ruby-lang.org/en/news/2017/12/14/net-ftp-command-injection-cve-2017-17405/