HTTP: Ruby Net FTP Command Injection

This signature detects attempts to exploit a known vulnerability against Ruby Net FTP. A successful attack can lead to command injection and arbitrary code execution.

Extended 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.

Affected Products

Ruby-lang ruby

References

CVE: CVE-2017-17405

Short Name

HTTP:CTS:RUBY-NET-CI

Severity

Major

Recommended

False

Recommended Action

Drop

HTTP: Ruby Net FTP Command Injection

Extended Description

Affected Products

References

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