RCE in Google Chrome
CVE-2020-16873
<p>A spoofing vulnerability manifests in Microsoft Xamarin.Forms due to the default settings on Android WebView version prior to 83.0.4103.106. This vulnerability could allow an attacker to execute arbitrary Javascript code on a target system.</p> <p>For the attack to be successful, the targeted user would need to browse to a malicious website or a website serving the malicious code through Xamarin.Forms.</p> <p>The security update addresses this vulnerability by preventing the malicious Javascript from running in the WebView.</p>
EPSS: 0.040 (89.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N.
Affected products
- Google Chrome
- Microsoft Xamarin.forms — versions 83.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-16873?
- CVE-2020-16873 is a medium-severity vulnerability in Google Chrome, classified under Initialization of a Resource with an Insecure Default. CVSS score: 4.7/10. Published 2020-09-11.
- How severe is CVE-2020-16873?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2020-16873 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.