CVE-2020-16873

Xamarin.Forms Spoofing Vulnerability

Severity Score

4.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.
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.
The security update addresses this vulnerability by preventing the malicious Javascript from running in the WebView.

Una vulnerabilidad de suplantación de identidad se manifiesta en Microsoft Xamarin.Forms debido a la configuración predeterminada en Android WebView versiones anteriores a 83.0.4103.106, también se conoce como "Xamarin.Forms Spoofing Vulnerability"

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-08-04 CVE Reserved
2020-09-11 CVE Published
2024-04-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-1188: Initialization of a Resource with an Insecure Default

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16873	2023-12-31

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"	Xamarin.forms Search vendor "Microsoft" for product "Xamarin.forms"	-	-	Affected	in	Google Search vendor "Google"	Chrome Search vendor "Google" for product "Chrome"	< 83.0.4103.106 Search vendor "Google" for product "Chrome" and version " < 83.0.4103.106"	android	Safe