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CVE-2020-15655

Status Candidate

Overview

A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Related Files

Ubuntu Security Notice USN-4443-1
Posted Jul 30, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4443-1 - 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, obtain sensitive information, bypass iframe sandbox restrictions, confuse the user, or execute arbitrary code. It was discovered that redirected HTTP requests which are observed or modified through a web extension could bypass existing CORS checks. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit this to obtain sensitive information across origins. Various other issues were also addressed.

tags | advisory, web, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-15652, CVE-2020-15653, CVE-2020-15654, CVE-2020-15655, CVE-2020-15656, CVE-2020-15659, CVE-2020-6514
MD5 | d80178008eece3baac547d3e0382ff43
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