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/*
* Copyright 2022 Google LLC
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Exploit shell quote with fuzzer's input as a parameter of echo.
* This PoC is extended from a report in GitHub Advisory Database:
* https://github.com/advisories/GHSA-g4rg-993r-mgx7
* The original report records a shell injection exploit in shell-quote v1.7.2,
* we show that a similar shell corruption exploit still persists in v1.7.3,
* after a commit that intends to fix the original exploit.
* */
/* Fuzz the target program with buf generated by Jsfuzz. */
function fuzz(buf) {
buf = String(buf)
const childProcess = require('child_process');
const shellQuote = require('shell-quote');
childProcess.execSync(shellQuote.quote(['echo', buf]));
}
/* Run Jsfuzz. */
module.exports = {
fuzz
};
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