Vulnerability Report

CVE-2021-22540

Title: Dart SDK XSS via DOM Clobbering

XSS

Proof Of Concept

No public PoC currently indexed for CVE-2021-22540.

CWE Category CWE-79

Published Date Apr 22, 2021

Modified Date Nov 21, 2024

Exploit Status Not Found

Score 6.1 CVSS v3.1

Exploit Probability (EPSS)

0.23%

Vulnerability Summary

CVE-2021-22540: 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.

Impacted Vendors

dart 1

Reference Links

https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588 https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522 https://github.com/dart-lang/sdk/commit/ce5a1c2392debce967415d4c09359ff2555e3588 https://github.com/dart-lang/sdk/security/advisories/GHSA-3rfv-4jvg-9522

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-22540 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

April 22, 2021 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction REQUIRED

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Stack

No specific products linked.