5.4
MEDIUM CVSS 3.0
CVE-2016-2817
Mozilla Firefox WebExtension Sandbox UXSS Vulnerability
Description

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.

INFO

Published Date :

April 30, 2016, 5:59 p.m.

Last Modified :

April 12, 2025, 10:46 a.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2016-2817 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mozilla firefox
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.0 MEDIUM [email protected]
Solution
Upgrade Firefox to address a Universal XSS (UXSS) vulnerability.
  • Update Firefox to the latest version.
  • Update affected packages.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-2817 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-2817 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-2817 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-2817 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html
    Added Reference http://www.mozilla.org/security/announce/2016/mfsa2016-46.html
    Added Reference http://www.securitytracker.com/id/1035692
    Added Reference http://www.ubuntu.com/usn/USN-2936-1
    Added Reference http://www.ubuntu.com/usn/USN-2936-2
    Added Reference http://www.ubuntu.com/usn/USN-2936-3
    Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1227462
    Added Reference https://security.gentoo.org/glsa/201701-15
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201701-15 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 01, 2016

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html [No Types Assigned]
    Added Reference http://www.ubuntu.com/usn/USN-2936-1 [No Types Assigned]
    Added Reference http://www.ubuntu.com/usn/USN-2936-2 [No Types Assigned]
    Added Reference http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html [No Types Assigned]
    Added Reference http://www.ubuntu.com/usn/USN-2936-3 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1035692 [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 04, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:mozilla:firefox:45.0.2:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
    Changed Reference Type http://www.mozilla.org/security/announce/2016/mfsa2016-46.html No Types Assigned http://www.mozilla.org/security/announce/2016/mfsa2016-46.html Advisory
    Added CWE CWE-264
  • Initial Analysis by [email protected]

    May. 04, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.4
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 4.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.40 }} -0.90%

score

0.57732

percentile