A security issue has been discovered in Ruby before versions 3.0.2, 2.7.4 and 2.6.8. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes Net::FTP extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).
A security issue has been discovered in Ruby before versions 3.0.2, 2.7.4 and 2.6.8. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes Net::FTP extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).
https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/ https://hackerone.com/reports/1145454 https://github.com/ruby/net-ftp/commit/5709ece67cf57a94655e34532f8a7899b28d496a
Vulmon