CVE-2020-6408: 
Google Chrome vulnerability analysis and mitigation

CVE-2020-6408 is a security vulnerability discovered in Google Chrome versions prior to 80.0.3987.87, identified as an insufficient policy enforcement issue in Cross-Origin Resource Sharing (CORS). The vulnerability was disclosed and patched in February 2020, affecting all Chrome installations before the fixed version (Chrome Release).

The vulnerability is classified as a low severity issue with a CVSS v3.1 base score of 6.5 (MEDIUM). It specifically involves insufficient policy enforcement in the CORS (Cross-Origin Resource Sharing) mechanism of Chrome, which could allow a local attacker to obtain potentially sensitive information through a crafted HTML page (NVD). The vulnerability was reported by Zhong Zhaochen of andsecurity.cn and was assigned a bug bounty of $1,000, indicating its relative severity level (Chrome Release).

The vulnerability could allow a local attacker to obtain potentially sensitive information via a crafted HTML page. This information disclosure vulnerability could potentially lead to the exposure of sensitive data that should normally be protected by CORS policies (Debian Security).

The vulnerability was patched in Chrome version 80.0.3987.87. Users and administrators are advised to upgrade to this version or later to mitigate the risk. Various Linux distributions have also released security updates to address this vulnerability, including Debian (DSA-4638-1), Fedora, and openSUSE (Debian Security, OpenSUSE Security).