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CVE-2020-16873

Опубликовано: 08 сент. 2020
Источник: msrc
CVSS3: 4.7
EPSS Низкий

Описание

Xamarin.Forms Spoofing Vulnerability

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.

Меры по смягчению последствий

Customers using older versions of Xamarin.Forms who are unable to update at this time can enable the setting themselves with this renderer:

public class CustomWebView : WebViewRenderer { protected override Android.Webkit.WebView CreateNativeControl() { var webView = base.CreateNativeControl(); webView.Settings.SetSupportMultipleWindows(true); return webView; } }

Customers who are not vulnerable and wish to revert this behavior can use the same renderer with the false value instead.

Обновления

ПродуктСтатьяОбновление
xamarin.forms

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Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

Exploitation Less Likely

Older Software Release

Exploitation Less Likely

DOS

N/A

EPSS

Процентиль: 78%
0.0119
Низкий

4.7 Medium

CVSS3

Связанные уязвимости

CVSS3: 4.7
nvd
больше 5 лет назад

<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>

CVSS3: 4.7
github
больше 3 лет назад

A spoofing vulnerability manifests in Microsoft Xamarin.Forms due to the default settings on Android WebView version prior to 83.0.4103.106, aka 'Xamarin.Forms Spoofing Vulnerability'.

CVSS3: 8.8
fstec
больше 5 лет назад

Уязвимость платформы пользовательского интерфейса Microsoft Xamarin.Forms, компонента для отображения веб-страниц WebView и браузера Google Chrome, связанная с ошибками представления информации пользовательским интерфейсом, позволяющая нарушителю проводить спуфинг-атаки

EPSS

Процентиль: 78%
0.0119
Низкий

4.7 Medium

CVSS3