CVE-2020-16873

Xamarin.Forms Spoofing Vulnerability

Medium · published September 11, 2020

CVSS v3.1
4.7
EPSS
4%
Percentile
90.4
In the wild
Unconfirmed
What it is

<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>

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N/E:F/RL:O/RC:C/CR:M/MAV:N/MAC:L/MPR:N/MUI:R/MS:C
CVSS v4.0
Not supplied
EPSS
0.03973 · 90.4th percentile
Published
2020-09-11T17:08Z
EPSS history
Timeline
  • 11 SEP 17:08Z
    Xamarin.Forms Spoofing Vulnerability
    cvelistv5