Uncaught Exception Affecting yaml package, versions >=2.0.0-4 <2.2.2 >=2.3.0-0 <2.3.0-5
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.12% (47th
percentile)
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Test your applications- Snyk ID SNYK-JS-YAML-5458867
- published 24 Apr 2023
- disclosed 24 Apr 2023
- credit Nazar Vinnichuk
Introduced: 24 Apr 2023
CVE-2023-2251 Open this link in a new tabHow to fix?
Upgrade yaml to version 2.2.2, 2.3.0-5 or higher.
Overview
Affected versions of this package are vulnerable to Uncaught Exception due to improper validation of the input passed to the functions parseDocument and parseAllDocuments.
Exploiting this vulnerability is possible when these functions are fed an invalid input with more than 80 carriage return characters (\r).
PoC
const yaml = require("yaml");
const string = "[" + "\r".repeat(80);
yaml.parseDocument(string);
References
CVSS Scores
version 3.1