Mozilla Firefox/Thunderbird 14 Object.defineProperty cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

A vulnerability was found in Mozilla Firefox and Thunderbird 14 (Web Browser) and classified as critical. This issue affects the function Object.defineProperty. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.

The weakness was presented 08/28/2012 by Mariusz Mlynski as MFSA 2012-59 as not defined advisory (Website). The advisory is shared at mozilla.org. The public release was coordinated in cooperation with Mozilla. The identification of this vulnerability is CVE-2012-1956 since 03/30/2012. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a private exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue. This could be used to confuse the current location to plugins.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 68636 (Oracle Linux 6 : thunderbird (ELSA-2012-1351)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120583 (Red Hat Update for Xulrunner Firefox (RHSA-2012:1350)).

Upgrading to version 15 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (68636). See 6036, 6035, 6039 and 6040 for similar entries.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68636
Nessus Name: Oracle Linux 6 : thunderbird (ELSA-2012-1351)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 71829
OpenVAS Name: FreeBSD Ports: firefox
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Firefox/Thunderbird 15

Timelineinfo

03/30/2012 🔍
08/28/2012 +151 days 🔍
08/28/2012 +0 days 🔍
08/28/2012 +0 days 🔍
08/28/2012 +0 days 🔍
08/29/2012 +1 days 🔍
08/29/2012 +0 days 🔍
08/29/2012 +0 days 🔍
08/29/2012 +0 days 🔍
09/01/2012 +3 days 🔍
07/12/2013 +314 days 🔍
03/27/2021 +2815 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2012-59
Researcher: Mariusz Mlynski
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-1956 (🔍)
OVAL: 🔍

Vulnerability Center: 35986 - Mozilla Firefox, Thunderbird and SeaMonkey window.location Object Shadow Vulnerability Allows XSS, Medium
SecurityFocus: 55260 - Mozilla Firefox, SeaMonkey, and Thunderbird CVE-2012-1956 Cross Site Scripting Vulnerability
Secunia: 50088 - Mozilla Firefox Multiple Vulnerabilities, Highly Critical
OSVDB: 84990

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 09/01/2012 21:04
Updated: 03/27/2021 15:57
Changes: 09/01/2012 21:04 (79), 01/31/2018 09:53 (10), 03/27/2021 15:57 (3)
Complete: 🔍
Cache ID: 3:C70:103

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