CVE-2016-2817

Severity

43%

Complexity

86%

Confidentiality

48%

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.

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.

CVSS 3.0 Base Score 5.4. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N).

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N).

Overview

First reported 8 years ago

2016-04-30 17:59:00

Last updated 7 years ago

2017-07-01 01:29:00

Affected Software

Mozilla Firefox

References

openSUSE-SU-2016:1211

openSUSE-SU-2016:1251

http://www.mozilla.org/security/announce/2016/mfsa2016-46.html

Vendor Advisory

1035692

USN-2936-1

USN-2936-2

USN-2936-3

https://bugzilla.mozilla.org/show_bug.cgi?id=1227462

GLSA-201701-15

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