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Access Restriction Bypass Affecting firefox package, versions <46.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 0.68% (80th percentile)
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NVD
5.4 medium
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Red Hat
4.3 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-423112
  • published 30 Apr 2016
  • disclosed 30 Apr 2016
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Introduced: 30 Apr 2016

CVE-2016-2817 Open this link in a new tab
CWE-264 Open this link in a new tab

How to fix?

Upgrade Debian:unstable firefox to version 46.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

The WebExtension sandbox feature in browser/components/extensions/ext-tabs.js in Mozilla Firefox before 46.0 does not properly restrict principal inheritance during chrome.tabs.create and chrome.tabs.update API calls, which allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted extension that accesses a (1) javascript: or (2) data: URL.