CVE-2016-5284

Mozilla: Add-on update site certificate pin expiration (MFSA 2016-85, MFSA 2016-86)

Severity Score

7.4

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 rely on unintended expiration dates for Preloaded Public Key Pinning, which allows man-in-the-middle attackers to spoof add-on updates by leveraging possession of an X.509 server certificate for addons.mozilla.org signed by an arbitrary built-in Certification Authority.

Mozilla Firefox en versiones anteriores a la 49.0, Firefox ESR en versiones 45.x anteriores a la 45.4 y Thunderbird en versiones anteriores a la 45.4 confían en fechas de expiración erróneas para Preloaded Public Key Pinning, lo que permite a los atacantes Man-in-the-Middle (MitM) suplantar las actualizaciones de los add-ons aprovechando la posesión de un certificado de servidor X.509 para addons.mozilla.org firmado por una autoridad certificadora integrada arbitraria.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-06-03 CVE Reserved
2016-09-21 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (15)

URL	Tag	Source
http://seclists.org/dailydave/2016/q3/51	Mailing List
http://www.mozilla.org/security/announce/2016/mfsa2016-85.html	Release Notes
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html	X_refsource_confirm
http://www.securityfocus.com/bid/93049	Vdb Entry
http://www.securitytracker.com/id/1036852	Vdb Entry
https://blog.mozilla.org/security/2016/09/16/update-on-add-on-pinning-vulnerability	Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1303127	Issue Tracking
https://hackernoon.com/tor-browser-exposed-anti-privacy-implantation-at-mass-scale-bd68e9eb1e95	Technical Description
https://www.mozilla.org/security/advisories/mfsa2016-86	X_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2016-88	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2016-1912.html	2018-10-30
http://www.debian.org/security/2016/dsa-3674	2018-10-30
https://security.gentoo.org/glsa/201701-15	2018-10-30
https://access.redhat.com/security/cve/CVE-2016-5284	2016-09-21
https://bugzilla.redhat.com/show_bug.cgi?id=1377565	2016-09-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				<= 48.0.2 Search vendor "Mozilla" for product "Firefox" and version " <= 48.0.2"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				45.0.2 Search vendor "Mozilla" for product "Firefox" and version "45.0.2"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				45.0 Search vendor "Mozilla" for product "Firefox Esr" and version "45.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				45.0.1 Search vendor "Mozilla" for product "Firefox Esr" and version "45.0.1"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				45.1.1 Search vendor "Mozilla" for product "Firefox Esr" and version "45.1.1"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				45.2.0 Search vendor "Mozilla" for product "Firefox Esr" and version "45.2.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				45.3.0 Search vendor "Mozilla" for product "Firefox Esr" and version "45.3.0"		-		Affected