CVE-2020-6506: 
JavaScript vulnerability analysis and mitigation

CVE-2020-6506 is a security vulnerability discovered in Google Chrome's WebView component on Android. The vulnerability was identified as an insufficient policy enforcement issue in WebView versions prior to 83.0.4103.106, which could allow a remote attacker to bypass site isolation through a crafted HTML page (NVD, Chrome Blog).

The vulnerability received a CVSS v3.1 Base Score of 6.5 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N. Under CVSS v2.0, it was rated at 4.3 (MEDIUM) with the vector (AV:N/AC:M/Au:N/C:N/I:P/A:N). The vulnerability specifically affects the policy enforcement mechanism in WebView, potentially compromising the site isolation security feature (NVD).

The vulnerability could allow a remote attacker to bypass site isolation protections through a specially crafted HTML page. Site isolation is a critical security feature that helps prevent malicious websites from accessing or stealing information from other websites, making this bypass a significant security concern (NVD).

The vulnerability requires user interaction and can be exploited remotely. An attacker would need to craft a specific HTML page that targets the WebView component to exploit this vulnerability (NVD).

Google addressed this vulnerability in Chrome version 83.0.4103.106 for Android. Users and organizations are advised to update to this version or later to protect against this security issue. The fix was included as part of a larger security update that addressed multiple vulnerabilities (Chrome Blog).

The vulnerability was reported by Alesandro Ortiz on May 18, 2020, and was awarded a bug bounty of $15,000, indicating its significance in Google's security assessment (Chrome Blog).