acorn is vulnerable to REGEX DoS. A regex of the form /[x-\ud800]/u causes the parser to enter an infinite loop. attackers may leverage the vulnerability leading to a Denial of Service since the string is not valid UTF16 and it results in it being sanitized before reaching the parser.
WS-2020-0042 - High Severity Vulnerability
ECMAScript parser
Library home page: https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz
Path to dependency file: /MqttStreamUsingNanoscale/package.json
Path to vulnerable library: /node_modules/webpack/node_modules/acorn/package.json
Dependency Hierarchy: - app-scripts-0.0.45.tgz (Root Library) - webpack-2.7.0.tgz - :x: **acorn-5.7.3.tgz** (Vulnerable Library)
acorn is vulnerable to REGEX DoS. A regex of the form /[x-\ud800]/u causes the parser to enter an infinite loop. attackers may leverage the vulnerability leading to a Denial of Service since the string is not valid UTF16 and it results in it being sanitized before reaching the parser.
Publish Date: 2020-03-01
URL: WS-2020-0042
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/advisories/GHSA-6chw-6frg-f759
Release Date: 2020-03-01
Fix Resolution (acorn): 5.7.4
Direct dependency fix Resolution (@ionic/app-scripts): 0.0.46-201611300357