Mozilla Firefox up to 49 WebExtension Sandbox access control

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

Summaryinfo

A vulnerability described as critical has been identified in Mozilla Firefox up to 49. Affected by this issue is some unknown functionality of the component WebExtension Sandbox. Such manipulation leads to access control. This vulnerability is traded as CVE-2016-9073. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 49 (Web Browser). It has been rated as critical. Affected by this issue is an unknown code block of the component WebExtension Sandbox. 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:

WebExtensions can bypass security checks to load privileged URLs and potentially escape the WebExtension sandbox. This vulnerability affects Firefox < 50.

The weakness was shared 11/15/2016 as MFSA 2016-89 as confirmed security advisory (Website). The advisory is shared for download at mozilla.org. This vulnerability is handled as CVE-2016-9073. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 95590 (openSUSE Security Update : Mozilla Firefox / Thunderbird and NSS (openSUSE-2016-1407)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196627 (Ubuntu Security Notification for Firefox Vulnerabilities (USN-3124-1)).

Upgrading to version 50 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95590), SecurityFocus (BID 94337†) and SecurityTracker (ID 1037298†). The entries VDB-93624, VDB-93625, VDB-93626 and VDB-93627 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95590
Nessus Name: openSUSE Security Update : Mozilla Firefox / Thunderbird and NSS (openSUSE-2016-1407)
Nessus File: 🔍
Nessus Family: 🔍

OpenVAS ID: 802170
OpenVAS Name: Mozilla Firefox Security Updates (mfsa_2016-89_2016-90)-Windows
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Firefox 50

Timelineinfo

11/15/2016 🔍
11/15/2016 +0 days 🔍
11/16/2016 +1 days 🔍
11/16/2016 +0 days 🔍
01/31/2018 +441 days 🔍
06/11/2018 +130 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2016-89
Status: Confirmed

CVE: CVE-2016-9073 (🔍)
GCVE (CVE): GCVE-0-2016-9073
GCVE (VulDB): GCVE-100-93644
SecurityFocus: 94337
SecurityTracker: 1037298 - Mozilla Firefox Multiple Bugs Let Remote Users Execute Arbitrary Code, Bypass Security Restrictions, Spoof URLs, Modify Files, and Obtain Potentially Sensitive Information

See also: 🔍

Entryinfo

Created: 11/16/2016 14:03
Updated: 01/31/2018 09:56
Changes: 11/16/2016 14:03 (46), 01/31/2018 09:56 (23)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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