CVE-2018-5140: Infoleak

Published Mar 13, 2018
·
Updated

Image for moz-icons can be accessed through the "moz-icon:" protocol through script in web content even when otherwise prohibited. This could allow for information leakage of which applications are associated with specific MIME types by a malicious page. This vulnerability affects Firefox < 59.

Other sources

Image for moz-icons can be accessed through the moz-icon: protocol through script in web content even when otherwise prohibited. This could allow for information leakage of which applications are associated with specific MIME types by a malicious page.

Affected Software

6 affected componentsFixes available
Mozilla Firefox<59.0
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=17.10
Mozilla Firefox<59
59
debian/firefox
147.0.4-1

Event History

Mar 13, 2018
CVE Published
12:00 AM
Jun 11, 2018
CVE Published
via MITRE·09:00 PM
Data Sourced
via MITRE·09:00 PM
DescriptionWeakness
Data Sourced
via NVD·09:29 PM
DescriptionSeverityWeaknessAffected Software
Jan 11, 2024
Data Sourced
via Launchpad·11:06 PM
Description
Nov 26, 2025
Data Sourced
via Ubuntu·06:15 PM
RemedyDescriptionSeverityAffected Software
Feb 20, 2026
Data Sourced
via Debian·12:49 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the vulnerability CVE-2018-5140?

The vulnerability CVE-2018-5140 is a security flaw in Firefox versions prior to 59 that allows a malicious page to access the image for moz-icons through the moz-icon: protocol, potentially revealing information about associated applications with specific MIME types.

2

Which software versions are affected by CVE-2018-5140?

Firefox versions prior to 59 are affected by CVE-2018-5140.

3

What is the severity of CVE-2018-5140?

CVE-2018-5140 has a severity rating of medium, with a CVSS score of 5.3.

4

How can I fix the vulnerability CVE-2018-5140?

To fix the vulnerability CVE-2018-5140, users should update their Firefox browser to version 59 or newer.

5

Are there any references for CVE-2018-5140?

Yes, you can find more information about CVE-2018-5140 at the following references: [1] [2] [3].

Contact

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