CVE-2018-18494: Medium severity Mozilla Thunderbird vulnerability

Published Dec 11, 2018
·
Updated

A same-origin policy violation allowing the theft of cross-origin URL entries when using the Javascript location property to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft.

External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18494

Other sources

A same-origin policy violation allowing the theft of cross-origin URL entries when using the Javascript location property to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft.

Mozilla

Affected Software

25 affected componentsFixes available
Mozilla Thunderbird<60.4
60.4
Mozilla Firefox<64
64
Mozilla Firefox ESR<60.4
60.4
Mozilla Firefox<64.0
Mozilla Firefox ESR<60.4.0
Mozilla Thunderbird<60.4.0
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
redhat Enterprise Linux Desktop=6.0
redhat Enterprise Linux Desktop=7.0
redhat Enterprise Linux Server=6.0
redhat Enterprise Linux Server=7.0
redhat Enterprise Linux Server Aus=7.6
redhat Enterprise Linux Server Eus=7.6
redhat Enterprise Linux Server Tus=7.6
redhat Enterprise Linux Workstation=6.0
redhat Enterprise Linux Workstation=7.0
Mozilla Firefox<60.4.0
debian/firefox
149.0.2-1
debian/firefox-esr
115.14.0esr-1~deb11u1140.9.1esr-1~deb11u1128.14.0esr-1~deb12u1140.9.1esr-1~deb12u1140.8.0esr-1~deb13u1140.9.1esr-1~deb13u1140.9.1esr-1
debian/thunderbird
1:115.12.0-1~deb11u11:140.9.1esr-1~deb11u11:140.6.0esr-1~deb12u11:140.9.1esr-1~deb12u11:140.8.0esr-1~deb13u11:140.9.1esr-1~deb13u11:140.9.0esr-11:140.9.1esr-1

Event History

Dec 11, 2018
CVE Published
12:00 AM
Dec 12, 2018
Data Sourced
via Red Hat·12:00 AM
DescriptionSeverityAffected Software
Feb 28, 2019
CVE Published
via MITRE·06:00 PM
Data Sourced
via MITRE·06:00 PM
DescriptionWeakness
Data Sourced
via NVD·06:29 PM
DescriptionSeverityWeaknessAffected Software
Jan 11, 2024
Data Sourced
via Launchpad·10:55 PM
Description
Nov 29, 2025
Data Sourced
via Ubuntu·06:16 PM
RemedyDescriptionSeverityAffected Software
Apr 15, 2026
Data Sourced
via Debian·05:09 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2018-18494?

CVE-2018-18494 is a vulnerability that allows the theft of cross-origin URL entries when using the Javascript location property to cause a redirection to another site using performance.getEntries().

2

Which software is affected by CVE-2018-18494?

Mozilla Firefox (up to version 64), Mozilla Firefox ESR (up to version 60.4), and Mozilla Thunderbird (up to version 60.4) are affected by CVE-2018-18494.

3

What is the severity of CVE-2018-18494?

CVE-2018-18494 has a severity rating of 6.5 (High).

4

How can I fix CVE-2018-18494?

Update Mozilla Firefox to version 64 or later, Mozilla Firefox ESR to version 60.4.1 or later, and Mozilla Thunderbird to version 60.4.1 or later to fix CVE-2018-18494.

5

Where can I find more information about CVE-2018-18494?

You can find more information about CVE-2018-18494 on the Mozilla Bugzilla and Mozilla security advisories websites.

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