CVE-2021-21267— Regular Expression Denial-of-Service in npm schema-inspector
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I. Basic Information for CVE-2021-21267
Vulnerability Information
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Vulnerability Title
Regular Expression Denial-of-Service in npm schema-inspector
Source: NVD (National Vulnerability Database)
Vulnerability Description
Schema-Inspector is an open-source tool to sanitize and validate JS objects (npm package schema-inspector). In before version 2.0.0, email address validation is vulnerable to a denial-of-service attack where some input (for example `a@0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.`) will freeze the program or web browser page executing the code. This affects any current schema-inspector users using any version to validate email addresses. Users who do not do email validation, and instead do other types of validation (like string min or max length, etc), are not affected. Users should upgrade to version 2.0.0, which uses a regex expression that isn't vulnerable to ReDoS.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Npm Schema-Inspector 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Npm Schema-Inspector是美国 （Npm）公司的一个应用程序。一个用于清理和验证JS对象的开源工具。 npm schema-inspector before version 2.0.0 存在资源管理错误漏洞，该漏洞源于邮件地址验证是容易受到拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| schema-inspector | schema-inspector | < 2.0.0 | - |
II. Public POCs for CVE-2021-21267
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.npmjs.com/package/schema-inspectorx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-21267
IV. Related Vulnerabilities
Same product: schema-inspector
Same weakness: CWE-400
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V. Comments for CVE-2021-21267
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