PT-2020-20371 · Google · Dart

Vincenzo Di Cicco · Published 2020-03-26 · Updated 2020-03-31 · CVE-2020-8923

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Dart versions up to and including 2.7.1 Dart dev versions up to and including 2.8.0-dev.16.0

Description The issue is related to improper HTML sanitization, allowing an attacker to inject custom HTML or JavaScript using DOM Clobbering techniques. This can lead to a cross-site scripting (XSS) attack. The estimated number of potentially affected devices is not provided. There is no information about real-world incidents where this issue was exploited.

Recommendations Update your Dart SDK to 2.7.2. Update your Dart dev version to 2.8.0-dev.17.0. If you cannot update, 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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-8923

GHSA-HFQ3-V9PV-P627

Affected Products

Dart

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2020-8923 · Security Note
• https://osv.dev/vulnerability/CVE-2020-8923 · Vendor Advisory
• https://github.com/dart-lang/sdk/security/advisories/GHSA-hfq3-v9pv-p627 · Note
• https://t.me/cvenotify/2182 · Telegram Post