Medium severity · published Mar 26, 2020
CVE-2020-8923
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…
6.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DS
Dart Software Development Kit · Dart
before 2.7.2; 2.8.0; 2.8.0; 2.8.0; 2.8.0; 2.8.0; +12 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8923
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8923
Third Party Advisory
https://github.com/dart-lang/sdk/security/advisories/GHSA-hfq3-v9pv-p627
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