[6.36] [http] sanitize URL options before use them#22355
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Remove any special symbols Add escape characters for quote and escape itself Discard all URL options longer than 1K Try to avoid manipulation of arguments for method execution
Avoid special characters as draw arguments
Always use DecodeUrlOptionValue method when processing URL arguments or URL string. Internally method provides escape symbols for quotes and backslash. If expecting numeric value - remove all symbols keeping alphanumeric, '.', '+', '-' and ':'
It allows to deserialize post data as ROOT object when processing exe.json request. While this can leads to arbitrary code loading and injection, disable this feature by default. Can be enabled back with: ``` serv->SetAllowPostObject(kTRUE); ```
While here arbitrary string injected into ProcessLine, ensure that only numeric argument is not quoted. All other arguments kinds will be quoted and prevent execution of potentially dangerous code
Verify execution of several supported requests which can be handled by http server. Testing: - root.json - root.xml - file.root - exe.json - exe.json with POST data - item.json - cmd.json - multi.json Also verify basic functionality of TRootSniffer::DecodeUrlOptionValue method
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Backport of #22186