CVE-2020-15966: 
Google Chrome vulnerability analysis and mitigation

CVE-2020-15966 is a security vulnerability discovered in Google Chrome versions prior to 85.0.4183.121. The vulnerability involves insufficient policy enforcement in Chrome extensions that could allow an attacker to obtain potentially sensitive information through a crafted Chrome Extension when a user is convinced to install a malicious extension (NVD, Chrome Releases).

The vulnerability has been assigned a CVSS v3.1 Base Score of 4.3 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N. This indicates that the vulnerability requires user interaction, has network attack vector, and can lead to low confidentiality impact without affecting integrity or availability (NVD).

If exploited, the vulnerability allows attackers to obtain potentially sensitive information through a maliciously crafted Chrome Extension. The impact is limited to information disclosure with no direct impact on system integrity or availability (NVD).

The vulnerability requires an attacker to convince a user to install a malicious extension, indicating that successful exploitation depends on social engineering tactics. The attack can be conducted remotely but requires user interaction (NVD).

The vulnerability was fixed in Google Chrome version 85.0.4183.121. Users and administrators should upgrade to this version or later to mitigate the risk. Various Linux distributions have also released security updates addressing this vulnerability, including Debian, Fedora, and Gentoo (Debian Advisory, Gentoo Advisory).