Mozilla Firefox 16.0.2 Style Inspector Stylesheet access control

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

A vulnerability was found in Mozilla Firefox 16.0.2 (Web Browser). It has been rated as critical. Affected by this issue is some unknown functionality of the component Style Inspector Stylesheet Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not properly restrict the context of HTML markup and Cascading Style Sheets (CSS) token sequences, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted stylesheet.

The weakness was shared 11/20/2012 by Mariusz Mlynski as MFSA 2012-104 as not defined advisory (Website). The advisory is available at mozilla.org. The vendor cooperated in the coordination of the public release. This vulnerability is handled as CVE-2012-4210 since 08/08/2012. The exploitation is known to be difficult. Local access is required to approach this attack. A simple authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a private exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 803348 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120702 (Red Hat Update for Xulrunner Firefox (RHSA-2012:1482)).

Upgrading to version 17.0 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 (80182) and Tenable (803348). bugzilla.mozilla.org is providing further details. The entries 6971, 6972, 6973 and 6975 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 803348
Nessus File: 🔍
Nessus Risk: 🔍

OpenVAS ID: 72599
OpenVAS Name: FreeBSD Ports: firefox
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: Firefox 17.0

Timelineinfo

08/08/2012 🔍
11/20/2012 +104 days 🔍
11/20/2012 +0 days 🔍
11/20/2012 +0 days 🔍
11/20/2012 +0 days 🔍
11/21/2012 +1 days 🔍
11/21/2012 +0 days 🔍
11/22/2012 +1 days 🔍
11/23/2012 +1 days 🔍
11/25/2012 +2 days 🔍
04/01/2013 +127 days 🔍
01/31/2018 +1766 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2012-104
Researcher: Mariusz Mlynski
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4210 (🔍)
OVAL: 🔍

X-Force: 80182
Vulnerability Center: 37385 - Mozilla Firefox <17.0 Arbitrary Code Execution Vulnerability - CVE-2012-4210, Critical
SecurityFocus: 56646 - Mozilla Firefox CVE-2012-4210 Style Inspector Remote Code Execution Vulnerability
Secunia: 51369 - Ubuntu update for firefox, Highly Critical
OSVDB: 87584

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

Entryinfo

Created: 11/23/2012 12:13
Updated: 01/31/2018 09:54
Changes: 11/23/2012 12:13 (87), 01/31/2018 09:54 (4)
Complete: 🔍

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