CVE-2020-3902: 
Apple iCloud vulnerability analysis and mitigation

CVE-2020-3902 is a WebKit vulnerability discovered in Apple's software ecosystem that was disclosed and patched in March 2020. The vulnerability was identified as an input validation issue that could lead to cross-site scripting (XSS) attacks when processing maliciously crafted web content. The affected products included iOS 13.4, iPadOS 13.4, tvOS 13.4, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, and iCloud for Windows 7.18. The vulnerability was discovered by security researcher Yiğit Can YILMAZ (@yilmazcanyigit) (Apple Support).

The vulnerability was characterized as an input validation issue in WebKit, Apple's browser engine. The security flaw allowed processing of maliciously crafted web content that could lead to cross-site scripting attacks. Apple addressed this vulnerability by implementing improved input validation mechanisms in the affected software (Apple Support).

When successfully exploited, the vulnerability could enable attackers to perform cross-site scripting (XSS) attacks through maliciously crafted web content. This type of attack could potentially allow attackers to inject malicious scripts into websites viewed by users of the affected Apple products (CVE Mitre).

Apple released security updates to address this vulnerability across multiple platforms. The fixes were included in iOS 13.4 and iPadOS 13.4, tvOS 13.4, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, and iCloud for Windows 7.18. Users were advised to update their devices and software to the latest versions to receive the security patches (Apple Support).