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38 строки
913 B
Plaintext
38 строки
913 B
Plaintext
= Command Injection
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Some Ruby core methods accept string data
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that includes text to be executed as a system command.
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They should not be called with unknown or unsanitized commands.
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These methods include:
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- Kernel.exec
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- Kernel.spawn
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- Kernel.system
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- {\`command` (backtick method)}[rdoc-ref:Kernel#`]
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(also called by the expression <tt>%x[command]</tt>).
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- IO.popen (when called with other than <tt>"-"</tt>).
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Some methods execute a system command only if the given path name starts
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with a <tt>|</tt>:
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- Kernel.open(command).
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- IO.read(command).
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- IO.write(command).
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- IO.binread(command).
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- IO.binwrite(command).
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- IO.readlines(command).
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- IO.foreach(command).
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- URI.open(command).
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Note that some of these methods do not execute commands when called
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from subclass +File+:
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- File.read(path).
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- File.write(path).
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- File.binread(path).
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- File.binwrite(path).
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- File.readlines(path).
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- File.foreach(path).
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