Mozilla Firefox/Thunderbird 15 top.location/Object.defineProperty cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

A vulnerability classified as critical has been found in Mozilla Firefox and Thunderbird 15 (Web Browser). This affects an unknown functionality. The manipulation of the argument top.location/Object.defineProperty with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allow remote attackers to conduct cross-site scripting (XSS) attacks via a binary plugin that uses Object.defineProperty to shadow the top object, and leverages the relationship between top.location and the location property.

The weakness was released 10/09/2012 by Mariusz Mlynski (moz_bug_r_a4) as MFSA 2012-82 as confirmed advisory (Website). It is possible to read the advisory at mozilla.org. The public release was coordinated with Mozilla. This vulnerability is uniquely identified as CVE-2012-3994 since 07/11/2012. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 62484 (CentOS 5 / 6 : firefox (CESA-2012:1350)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS 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 16 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (79152), Tenable (62484), SecurityFocus (BID 56118†), OSVDB (86110†) and Secunia (SA50936†).

Productinfo

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Version

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: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 62484
Nessus Name: CentOS 5 / 6 : firefox (CESA-2012:1350)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 72477
OpenVAS Name: FreeBSD Ports: firefox
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Firefox/Thunderbird 16

Timelineinfo

07/11/2012 🔍
10/09/2012 +90 days 🔍
10/09/2012 +0 days 🔍
10/10/2012 +1 days 🔍
10/10/2012 +0 days 🔍
10/10/2012 +0 days 🔍
10/11/2012 +1 days 🔍
10/12/2012 +1 days 🔍
04/18/2021 +3110 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2012-82
Researcher: Mariusz Mlynski (moz_bug_r_a4)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3994 (🔍)
OVAL: 🔍

X-Force: 79152
SecurityFocus: 56118 - Mozilla Firefox/SeaMonkey/Thunderbird CVE-2012-3994 Cross Site Scripting Vulnerability
Secunia: 50936 - Mozilla Firefox / Thunderbird Multiple Vulnerabilities, Highly Critical
OSVDB: 86110
SecurityTracker: 1027631 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code, Spoof Information, and Inject Scripting Code
Vulnerability Center: 36465 - Mozilla Firefox, Thunderbird and SeaMonkey Remote XSS Related to Object.defineProperty, Medium

Entryinfo

Created: 10/12/2012 12:18
Updated: 04/18/2021 08:21
Changes: 10/12/2012 12:18 (54), 01/31/2018 09:54 (27), 04/18/2021 08:16 (8), 04/18/2021 08:21 (1)
Complete: 🔍
Cache ID: 3:B72:103

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