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CVE-2020-6809

Status Candidate

Overview

When a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files. This vulnerability affects Firefox < 74.

Related Files

Ubuntu Security Notice USN-4299-1
Posted Mar 12, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4299-1 - Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the URL or other browser chrome, obtain sensitive information, bypass Content Security Policy protections, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, ubuntu
advisories | CVE-2019-20503, CVE-2020-6808, CVE-2020-6809, CVE-2020-6810, CVE-2020-6811, CVE-2020-6812, CVE-2020-6815
SHA-256 | c9548579e92878dc15ae18f4f30497be227fdb843c5b78b9bfb1684b48b215b8
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