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codeql/python/ql/src/Security/CWE-295/RequestWithoutValidation.ql
2022-10-07 22:31:00 +02:00

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/**
* @name Request without certificate validation
* @description Making a request without certificate validation can allow man-in-the-middle attacks.
* @kind problem
* @problem.severity error
* @security-severity 7.5
* @precision medium
* @id py/request-without-cert-validation
* @tags security
* external/cwe/cwe-295
*/
import python
private import semmle.python.dataflow.new.DataFlow
private import semmle.python.Concepts
from
Http::Client::Request request, DataFlow::Node disablingNode, DataFlow::Node origin, string ending
where
request.disablesCertificateValidation(disablingNode, origin) and
// Showing the origin is only useful when it's a different node than the one disabling
// certificate validation, for example in `requests.get(..., verify=arg)`, `arg` would
// be the `disablingNode`, and the `origin` would be the place were `arg` got its
// value from.
if disablingNode = origin then ending = "." else ending = " by $@."
select request, "This request may run without certificate validation because $@" + ending,
disablingNode, "it is disabled", origin, "this value"