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CVE-2019-10062

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Date: May 13, 2021

The HTMLSanitizer class in html-sanitizer.ts in all released versions of the Aurelia framework 1.x repository is vulnerable to XSS. The sanitizer only attempts to filter SCRIPT elements, which makes it feasible for remote attackers to conduct XSS attacks via (for example) JavaScript code in an attribute of various other elements. An attacker might also exploit a bug in how the SCRIPT string is processed by splitting and nesting them for example.

Language: JS

Severity Score

Related Resources (9)

https://aurelia.io
https://github.com/aurelia/templating-resources/blob/0cef07a8cac8e99146d8e1c4b734491bb3dc4724/src/html-sanitizer.js
https://github.com/aurelia/framework/issues/992
https://discourse.aurelia.io/t/xss-vulnerability-in-htmlsanitizer-might-be-insufficiently-handled/4219
https://www.gosecure.net/blog/2021/05/12/aurelia-framework-insecure-default-allows-xss
https://nvd.nist.gov/vuln/detail/CVE-2019-10062
https://www.gosecure.net/blog/2021/05/12/aurelia-framework-insecure-default-allows-xss/
https://github.com/aurelia/framework
https://www.mend.io/vulnerability-database/CVE-2019-10062

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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