Description

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.

References

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

http://www.securitytracker.com/id/1042004

https://access.redhat.com/errata/RHSA-2018:0378

https://access.redhat.com/errata/RHSA-2018:0583

https://access.redhat.com/errata/RHSA-2018:0584

https://access.redhat.com/errata/RHSA-2018:0585

https://access.redhat.com/errata/RHSA-2019:2806

https://lists.debian.org/debian-lts-announce/2017/12/msg00024.html

https://lists.debian.org/debian-lts-announce/2017/12/msg00025.html

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html

https://www.debian.org/security/2018/dsa-4259

https://www.exploit-db.com/exploits/43381/

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

https://www.ruby-lang.org/en/news/2017/12/14/ruby-2-4-3-released/

Details

Risk Information

CVSS v2

CVSS v3