Mozilla Firefox/Firefox ESR/Thunderbird origin validation

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird. It has been declared as critical. This issue affects some unknown processing. The manipulation results in origin validation. This vulnerability is identified as CVE-2018-18494. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Firefox, Firefox ESR and Thunderbird (Web Browser) (version now known). Affected is some unknown processing. The manipulation with an unknown input leads to a origin validation vulnerability. CWE is classifying the issue as CWE-346. The product does not properly verify that the source of data or communication is valid. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

The bug was discovered 12/11/2018. The weakness was released 02/28/2019 by Atte Kettunen (Nils) with Kryptos Logic as Bug 1487964 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.mozilla.org. This vulnerability is traded as CVE-2018-18494 since 10/19/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 119606 (Mozilla Firefox ESR < 60.4 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 197328 (Ubuntu Security Notification for Firefox Vulnerabilities (USN-3844-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119606) and SecurityFocus (BID 106168†). Entries connected to this vulnerability are available at VDB-131251, VDB-131252, VDB-131253 and VDB-131254. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

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

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Origin validation
CWE: CWE-346 / CWE-345
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: 119606
Nessus Name: Mozilla Firefox ESR < 60.4 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/19/2018 🔍
12/11/2018 +53 days 🔍
12/11/2018 +0 days 🔍
12/11/2018 +0 days 🔍
12/12/2018 +1 days 🔍
02/28/2019 +78 days 🔍
03/01/2019 +1 days 🔍
11/26/2025 +2462 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1487964
Researcher: Atte Kettunen (Nils)
Organization: Kryptos Logic
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-18494 (🔍)
GCVE (CVE): GCVE-0-2018-18494
GCVE (VulDB): GCVE-100-131256

OVAL: 🔍

SecurityFocus: 106168 - Mozilla Firefox and Firefox ESR Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 03/01/2019 06:26
Updated: 11/26/2025 09:54
Changes: 03/01/2019 06:26 (75), 05/13/2020 10:18 (7), 11/26/2025 09:54 (17)
Complete: 🔍
Cache ID: 216::103

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