Mozilla Firefox up to 56 Referer Policy Network Request information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Mozilla Firefox up to 56. This affects an unknown function of the component Referer Policy Handler. This manipulation as part of Network Request causes information disclosure. This vulnerability is tracked as CVE-2017-7842. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 56 (Web Browser). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component Referer Policy Handler. The manipulation as part of a Network Request 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. The summary by CVE is:

If a document's Referrer Policy attribute is set to "no-referrer" sometimes two network requests are made for "<link>" elements instead of one. One of these requests includes the referrer instead of respecting the set policy to not include a referrer on requests. This vulnerability affects Firefox < 57.

The bug was discovered 11/14/2017. The weakness was disclosed 06/11/2018 with Mozilla as Bug 1397064 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.mozilla.org. This vulnerability is known as CVE-2017-7842 since 04/12/2017. 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. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 104564 (FreeBSD : mozilla -- multiple vulnerabilities (f78eac48-c3d1-4666-8de5-63ceea25a578)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370658 (Mozilla Firefox Multiple Vulnerabilities. (mfsa2017-24,mfsa2017-25)).

Upgrading to version 57 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104564) and SecurityFocus (BID 101832†). The entries VDB-119332, VDB-119333, VDB-119334 and VDB-119336 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
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: 104564
Nessus Name: FreeBSD : mozilla -- multiple vulnerabilities (f78eac48-c3d1-4666-8de5-63ceea25a578)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803118
OpenVAS Name: Ubuntu Update for firefox USN-3477-4
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 57

Timelineinfo

04/12/2017 🔍
11/14/2017 +216 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/15/2017 +1 days 🔍
06/11/2018 +207 days 🔍
06/11/2018 +0 days 🔍
06/12/2018 +1 days 🔍
03/22/2023 +1744 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1397064
Organization: Mozilla
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-7842 (🔍)
GCVE (CVE): GCVE-0-2017-7842
GCVE (VulDB): GCVE-100-119347

OVAL: 🔍

SecurityFocus: 101832 - Mozilla Firefox Prior to 57 Multiple Security Vulnerabilities
SecurityTracker: 1039803

See also: 🔍

Entryinfo

Created: 06/12/2018 08:56
Updated: 03/22/2023 13:48
Changes: 06/12/2018 08:56 (80), 02/18/2020 08:35 (5), 03/22/2023 13:48 (4)
Complete: 🔍
Cache ID: 216::103

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