Mozilla Firefox up to 58.x view-source URL information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Firefox up to 58.x. This issue affects some unknown processing of the component view-source URL Handler. This manipulation causes information disclosure. This vulnerability is registered as CVE-2018-5134. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Mozilla Firefox up to 58.x (Web Browser) and classified as critical. Affected by this vulnerability is an unknown functionality of the component view-source URL Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

WebExtensions may use "view-source:" URLs to view local "file:" URL content, as well as content stored in "about:cache", bypassing restrictions that only allow WebExtensions to view specific content. This vulnerability affects Firefox < 59.

The bug was discovered 03/13/2018. The weakness was published 03/13/2018 by Abdulrahman Alqabandi (Basti) as MFSA2018-06 as confirmed security advisory (Website). The advisory is shared at mozilla.org. This vulnerability is known as CVE-2018-5134 since 01/03/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 108377 (Mozilla Firefox < 59 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370821 (Mozilla Firefox Multiple Vulnerabilities (mfsa2018-06 and mfsa2018-07)).

Upgrading to version 59 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 (108377), SecurityFocus (BID 103386†) and SecurityTracker (ID 1040514†). Similar entries are available at VDB-114730, VDB-114731, VDB-114732 and VDB-114733. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

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

NVD Base Score: 7.5
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: Information disclosure
CWE: CWE-200 / 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: 108377
Nessus Name: Mozilla Firefox < 59 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 70227
OpenVAS Name: Mozilla Firefox Security Updates(mfsa_2018-06_2018-07)-MAC OS X
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 59

Timelineinfo

01/03/2018 🔍
03/13/2018 +69 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/13/2018 +0 days 🔍
03/15/2018 +2 days 🔍
03/18/2018 +3 days 🔍
06/11/2018 +84 days 🔍
02/17/2020 +616 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA2018-06
Researcher: Abdulrahman Alqabandi (Basti)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-5134 (🔍)
GCVE (CVE): GCVE-0-2018-5134
GCVE (VulDB): GCVE-100-114745
SecurityFocus: 103386 - Mozilla Firefox MFSA2018-06 Multiple Security Vulnerabilities
SecurityTracker: 1040514

See also: 🔍

Entryinfo

Created: 03/18/2018 10:30
Updated: 02/17/2020 21:17
Changes: 03/18/2018 10:30 (79), 02/17/2020 21:17 (9)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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