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.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
WS-2020-0042 - High Severity Vulnerability
ECMAScript parser
Library home page: https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/jsdom/node_modules/acorn/package.json
Dependency Hierarchy: - react-scripts-3.4.0.tgz (Root Library) - jest-24.9.0.tgz - jest-cli-24.9.0.tgz - jest-config-24.9.0.tgz - jest-environment-jsdom-24.9.0.tgz - jsdom-11.12.0.tgz - :x: **acorn-5.7.4.tgz** (Vulnerable Library)
Found in HEAD commit: 340e24f4064182631ba657b42580dbb0476e3b94
Found in base branch: master
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://www.npmjs.com/advisories/1488
Release Date: 2020-03-01
Fix Resolution (acorn): 6.4.1
Direct dependency fix Resolution (react-scripts): 4.0.0