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CVE-2018-12398

Status Candidate

Overview

By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.

Related Files

Ubuntu Security Notice USN-3801-2
Posted Nov 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3801-2 - USN-3801-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problems. 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, bypass CSP restrictions, spoof the protocol registration notification bar, leak SameSite cookies, bypass mixed content warnings, or execute arbitrary code. Multiple security issues were discovered with WebExtensions in Firefox. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit these to bypass domain restrictions, gain additional privileges, or run content scripts in local pages without permission. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local, spoof, vulnerability, protocol
systems | linux, ubuntu
advisories | CVE-2018-12398, CVE-2018-12403
MD5 | 811a5ef0a3ce8b51d96d4535e884c045
Ubuntu Security Notice USN-3801-1
Posted Oct 24, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3801-1 - 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, bypass CSP restrictions, spoof the protocol registration notification bar, leak SameSite cookies, bypass mixed content warnings, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof, protocol
systems | linux, ubuntu
advisories | CVE-2018-12388, CVE-2018-12395, CVE-2018-12398, CVE-2018-12399, CVE-2018-12403
MD5 | 952c961245ddeace11587b0845c529ab
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