CVE-2020-26291

URI.js is a javascript URL mutation library (npm package urijs). In URI.js before version 1.19.4, the hostname can be spoofed by using a backslash (`\`) character followed by an at (`@`) character. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior. For example the URL `https://expected-example.com\@observed-example.com` will incorrectly return `observed-example.com` if using an affected version. Patched versions correctly return `expected-example.com`. Patched versions match the behavior of other parsers which implement the WHATWG URL specification, including web browsers and Node's built-in URL class. Version 1.19.4 is patched against all known payload variants. Version 1.19.3 has a partial patch but is still vulnerable to a payload variant.]

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:P/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/medialize/URI.js/commit/b02bf037c99ac9316b77ff8bfd840e90becf1155	Patch Third Party Advisory
https://github.com/medialize/URI.js/releases/tag/v1.19.4	Release Notes Third Party Advisory
https://github.com/medialize/URI.js/security/advisories/GHSA-3329-pjwv-fjpg	Third Party Advisory
https://www.npmjs.com/package/urijs	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:uri.js_project:uri.js:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-12-31 00:15

Updated : 2024-02-28 18:08

NVD link : CVE-2020-26291

Mitre link : CVE-2020-26291

CVE.ORG link : CVE-2020-26291

JSON object : View

Products Affected

uri.js_project

uri.js

CWE

CWE-20

Improper Input Validation

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In URI.js before version 1.19.4, the hostname can be spoofed by using a backslash (`\\`) character followed by an at (`@`) character. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior. For example the URL `https://expected-example.com\\@observed-example.com` will incorrectly return `observed-example.com` if using an affected version. Patched versions correctly return `expected-example.com`. Patched versions match the behavior of other parsers which implement the WHATWG URL specification, including web browsers and Node's built-in URL class. Version 1.19.4 is patched against all known payload variants. Version 1.19.3 has a partial patch but is still vulnerable to a payload variant.]"}, {"lang": "es", "value": "URI.js es una biblioteca de mutaci\u00f3n de URL de JavaScript (paquete npm urijs). En URI.js versiones anteriores a 1.19.4, el nombre de host puede ser falsificado usando un car\u00e1cter barra invertida (\"\\\") seguido de un car\u00e1cter arroba (\"@\"). Si el nombre de host es usado en decisiones de seguridad, la decisi\u00f3n puede ser incorrecta. Dependiendo del uso de la biblioteca y la intenci\u00f3n del atacante, los impactos pueden incluir omisiones de lista de permisos y bloqueos, ataques SSRF, redireccionamientos abiertos u otros comportamientos no deseados. Por ejemplo, la URL \"https://expected-example.com\\@observed-example.com\" devolver\u00e1 incorrectamente \"observed-example.com\" si se usa una versi\u00f3n afectada. Las versiones parcheadas devuelven correctamente \"expected-example.com\". Las versiones parcheadas coinciden con el comportamiento de otros analizadores que implementan la especificaci\u00f3n de URL WHATWG, incluyendo los navegadores web y la clase URL incorporada de Node. La versi\u00f3n 1.19.4 est\u00e1 parcheada contra todas las variantes de carga \u00fatil conocidas. La versi\u00f3n 1.19.3 presenta una ruta parcial pero sigue siendo vulnerable a una variante de carga \u00fatil."}], "lastModified": "2022-11-29T15:00:40.670", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:uri.js_project:uri.js:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "87FD3B7F-F679-49B9-9876-B50CA1A634CD", "versionEndExcluding": "1.19.4"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}