Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-8923

Severity CVSS v4.0:
Pending analysis
Type:
CWE-79 Cross-Site Scripting (XSS)
Publication date:
26/03/2020
Last modified:
31/03/2020

Description

An improper HTML sanitization in Dart versions up to and including 2.7.1 and dev versions 2.8.0-dev.16.0, allows an attacker leveraging DOM Clobbering techniques to skip the sanitization and inject custom html/javascript (XSS). Mitigation: update your Dart SDK to 2.7.2, and 2.8.0-dev.17.0 for the dev version. If you cannot update, we recommend you review the way you use the affected APIs, and pay special attention to cases where user-provided data is used to populate DOM nodes. Consider using Element.innerText or Node.text to populate DOM elements.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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

Base Score 3.x
6.10
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:* 2.7.2 (excluding)
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev0.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev1.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev10.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev11.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev12.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev13.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev14.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev15.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev16.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev2.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev3.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev4.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev5.0:*:*:*:*:*:*
cpe:2.3:a:dart:dart_software_development_kit:2.8.0:dev6.0:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools