CVE-2021-22540— XSS in Dart SDK
Quick assessment
Affected
Google LLC Dart SDK
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Dart是一款开源的编程语言。 Dart SDK versions prior to 2.12.3 存在跨站脚本漏洞，该漏洞允许攻击者可利用该漏洞通过重击DOM来使用XSS攻击。
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I. Basic Information for CVE-2021-22540
Vulnerability Information
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Vulnerability Title
XSS in Dart SDK
Source: CVE Program / CVE List V5
Vulnerability Description
Bad validation logic in the Dart SDK versions prior to 2.12.3 allow an attacker to use an XSS attack via DOM clobbering. The validation logic in dart:html for creating DOM nodes from text did not sanitize properly when it came across template tags.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Dart 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dart是一款开源的编程语言。 Dart SDK versions prior to 2.12.3 存在跨站脚本漏洞，该漏洞允许攻击者可利用该漏洞通过重击DOM来使用XSS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 |
|---|---|---|---|---|
| Google LLC | Dart SDK | stable ~ 2.12.3 | - |
|
II. Public POCs for CVE-2021-22540
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-22540 (1)
-
https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588 x_refsource_CONFIRM
Vendor Advisories for CVE-2021-22540 (1)
-
https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522 x_refsource_CONFIRM
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V. Comments for CVE-2021-22540
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