Mozilla Firefox up to 55 WebExtensions access control

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Mozilla Firefox up to 55. The impacted element is an unknown function of the component WebExtensions. Such manipulation leads to access control. This vulnerability is traded as CVE-2017-7821. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 55 (Web Browser). Affected by this issue is an unknown functionality of the component WebExtensions. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability.

The bug was discovered 09/28/2017. The weakness was shared 09/28/2017 by Abdulrahman Alqabandi (Mike) as MFSA 2017-21 as confirmed security advisory (Website). The advisory is shared for download at mozilla.org. This vulnerability is handled as CVE-2017-7821 since 04/12/2017. 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 103678 (Mozilla Firefox < 56 Multiple Vulnerabilities (macOS)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370584 (Mozilla Firefox Multiple Vulnerabilities. (mfsa2017-21,mfsa2017-22)).

Upgrading to version 56 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 (103678), SecurityFocus (BID 101057†) and SecurityTracker (ID 1039465†). The entries VDB-107430, VDB-107431, VDB-107432 and VDB-107433 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: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 9.8
NVD Vector: 🔍

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-284 / CWE-266
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: 103678
Nessus Name: Mozilla Firefox < 56 Multiple Vulnerabilities (macOS)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802170
OpenVAS Name: Mozilla Firefox Security Updates( mfsa_2017-21_2017-22 )-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 56

Timelineinfo

04/12/2017 🔍
09/28/2017 +169 days 🔍
09/28/2017 +0 days 🔍
09/28/2017 +0 days 🔍
09/28/2017 +0 days 🔍
09/29/2017 +1 days 🔍
10/04/2017 +5 days 🔍
10/06/2017 +2 days 🔍
06/11/2018 +247 days 🔍
01/15/2021 +949 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2017-21
Researcher: Abdulrahman Alqabandi (Mike)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-7821 (🔍)
GCVE (CVE): GCVE-0-2017-7821
GCVE (VulDB): GCVE-100-107444

OVAL: 🔍

SecurityFocus: 101057 - Mozilla Firefox Multiple Security Vulnerabilities
SecurityTracker: 1039465

See also: 🔍

Entryinfo

Created: 10/04/2017 11:52
Updated: 01/15/2021 13:00
Changes: 10/04/2017 11:52 (81), 11/21/2019 20:24 (7), 01/15/2021 13:00 (2)
Complete: 🔍
Cache ID: 216::103

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