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Vulnerability DatabaseCVE-2021-45085

CVE-2021-45085: 
NixOS vulnerability analysis and mitigation

Overview

XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an about: page, as demonstrated by ephy-about:overview when a user visits an XSS payload page often enough to place that page on the Most Visited list (NVD, CVE).

Technical details

The vulnerability has been assigned a CVSS v3.1 Base Score of 6.1 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation - Cross-site Scripting) (NVD).

Impact

The vulnerability allows attackers to perform cross-site scripting (XSS) attacks through malicious websites. This could potentially lead to unauthorized access to user data and compromise of browser security (Debian Advisory, Ubuntu Notice).

Mitigation and workarounds

The vulnerability has been fixed in multiple distributions: Debian 11 (Bullseye) in version 3.38.2-1+deb11u1, Debian 10 (Buster) in version 3.32.1.2-3~deb10u2, Ubuntu 22.04 in version 42.1-1ubuntu1, and Ubuntu 20.04 in version 3.36.4-0ubuntu2. Users are recommended to upgrade their epiphany-browser packages to these versions (Debian Advisory, Ubuntu Notice).

Additional resources

Source: This report was generated using AI

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