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{
"cells": [
{
"cell_type": "markdown",
"id": "ad247f35-1a9d-4f3a-9788-ecdbc43b6976",
"metadata": {},
"source": [
"## Setup"
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "9051f612-d935-4b90-a623-0c5504b51d9c",
"metadata": {
"tags": []
},
"outputs": [
{
"data": {
"text/plain": [
"'Database registered!'"
]
},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"%set_database codeql-db"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "a460e252-30f5-4cad-9a32-253e9d789025",
"metadata": {},
"outputs": [],
"source": [
"import python\n",
"import semmle.python.ApiGraphs\n",
"import semmle.python.dataflow.new.RemoteFlowSources\n",
"import semmle.python.dataflow.new.DataFlow"
]
},
{
"cell_type": "markdown",
"id": "ee080ea9-375f-432b-8fc8-a93fa0e60910",
"metadata": {},
"source": [
"## Code exploration"
]
},
{
"cell_type": "markdown",
"id": "3c305ec3-40f7-4a7e-bef6-845ae0ef0c4f",
"metadata": {},
"source": [
"### Find all calls to `subprocess.call`"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "32c13716-39a0-43d9-8e05-25a11fcd557f",
"metadata": {},
"outputs": [
{
"data": {
"text/html": [
"<table border=\"1\" class=\"dataframe\">\n",
" <thead>\n",
" <tr style=\"text-align: right;\">\n",
" <th></th>\n",
" <th>n</th>\n",
" <th>URL for n</th>\n",
" </tr>\n",
" </thead>\n",
" <tbody>\n",
" <tr>\n",
" <th>0</th>\n",
" <td>ControlFlowNode for Attribute()</td>\n",
" <td>file:///Users/pwntester/src/github.com/github/codeql-jupyter-kernel/example/src/main.py:3:1:3:38</td>\n",
" </tr>\n",
" </tbody>\n",
"</table>"
],
"text/plain": [
"<IPython.core.display.HTML object>"
]
},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"query predicate test(API::CallNode n) {\n",
" n = API::moduleImport(\"subprocess\").getMember(\"call\").getACall()\n",
"}"
]
},
{
"cell_type": "markdown",
"id": "0e37dbb8-32b5-45a0-8aa2-90a8b415c905",
"metadata": {},
"source": [
"## Attack surface"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "9383863b-0f6e-4fc3-afad-b653cae62bdf",
"metadata": {},
"outputs": [],
"source": [
"query predicate attackSurface(DataFlow::Node n) { n instanceof RemoteFlowSource }"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "CodeQL",
"language": "codeql",
"name": "codeql"
},
"language_info": {
"file_extension": ".ql",
"help_links": [
{
"text": "MetaKernel Magics",
"url": "https://metakernel.readthedocs.io/en/latest/source/README.html"
}
],
"mimetype": "text/x-codeql",
"name": "codeql"
}
},
"nbformat": 4,
"nbformat_minor": 5
}
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