// For flags

CVE-2015-2741

Mozilla: Key pinning is ignored when overridable errors are encountered (MFSA 2015-67)

Severity Score

4.3
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 do not enforce key pinning upon encountering an X.509 certificate problem that generates a user dialog, which allows user-assisted man-in-the-middle attackers to bypass intended access restrictions by triggering a (1) expired certificate or (2) mismatched hostname for a domain with pinning enabled.

Mozilla Firefox anterior a 39.0, Firefox ESR 38.x anterior a 38.1, y Thunderbird anterior a 38.1 no refuerzan la fijación (pinning) de las claves cuando encuentre un problema con los certificados X.509 que genere un dialogo de usuario, lo que permite a atacantes man-in-the-middle asistidos por usuario evadir las restricciones de acceso mediante la provocación de (1) un certificado caducado o (2) un nombre de anfitrión malasociado para un dominio con la fijación (pinning) habilitado.

It was found that Firefox skipped key-pinning checks when handling an error that could be overridden by the user (for example an expired certificate error). This flaw allowed a user to override a pinned certificate, which is an action the user should not be able to perform.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2015-03-25 CVE Reserved
  • 2015-07-03 CVE Published
  • 2024-07-30 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-310: Cryptographic Issues
CAPEC
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"
<= 38.1.0
Search vendor "Mozilla" for product "Firefox" and version " <= 38.1.0"
-
Affected
Oracle
Search vendor "Oracle"
Solaris
Search vendor "Oracle" for product "Solaris"
11.3
Search vendor "Oracle" for product "Solaris" and version "11.3"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.0
Search vendor "Mozilla" for product "Firefox Esr" and version "31.0"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.1
Search vendor "Mozilla" for product "Firefox Esr" and version "31.1"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.1.0
Search vendor "Mozilla" for product "Firefox Esr" and version "31.1.0"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.1.1
Search vendor "Mozilla" for product "Firefox Esr" and version "31.1.1"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.2
Search vendor "Mozilla" for product "Firefox Esr" and version "31.2"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.3
Search vendor "Mozilla" for product "Firefox Esr" and version "31.3"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.3.0
Search vendor "Mozilla" for product "Firefox Esr" and version "31.3.0"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.4
Search vendor "Mozilla" for product "Firefox Esr" and version "31.4"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.5
Search vendor "Mozilla" for product "Firefox Esr" and version "31.5"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.5.1
Search vendor "Mozilla" for product "Firefox Esr" and version "31.5.1"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.5.2
Search vendor "Mozilla" for product "Firefox Esr" and version "31.5.2"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.5.3
Search vendor "Mozilla" for product "Firefox Esr" and version "31.5.3"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.6.0
Search vendor "Mozilla" for product "Firefox Esr" and version "31.6.0"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
31.7.0
Search vendor "Mozilla" for product "Firefox Esr" and version "31.7.0"
-
Affected
Mozilla
Search vendor "Mozilla"
Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
38.0
Search vendor "Mozilla" for product "Firefox Esr" and version "38.0"
-
Affected