Mozilla Firefox up to 60 Spectre PerformanceNavigationTiming input validation

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.2 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Mozilla Firefox up to 60. It has been rated as critical. This vulnerability affects the function PerformanceNavigationTiming of the component Spectre Handler. Performing a manipulation results in input validation.
This vulnerability is reported as CVE-2018-12367. The attack is possible to be carried out remotely. No exploit exists.
Upgrading the affected component is advised.
Details
A vulnerability was found in Mozilla Firefox up to 60 (Web Browser). It has been classified as critical. This affects the function PerformanceNavigationTiming of the component Spectre Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. This is going to have an impact on confidentiality, integrity, and availability.
The bug was discovered 06/26/2018. The weakness was disclosed 06/26/2018 as MFSA 2018-15 as confirmed security advisory (Website). The advisory is shared at mozilla.org. This vulnerability is uniquely identified as CVE-2018-12367 since 06/14/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.
The vulnerability scanner Nessus provides a plugin with the ID 111980 (Mozilla Thunderbird < 60.0 Multiple Vulnerabilities (macOS)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171560 (OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2018:2658-1)).
Upgrading to version 61 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 (111980), SecurityFocus (BID 104561†) and SecurityTracker (ID 1041193†). The entries VDB-120044, VDB-120045, VDB-120046 and VDB-120047 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.mozilla.org/
- Product: https://www.mozilla.org/en-US/firefox/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 5.2
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 4.3
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Input validationCWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 111980
Nessus Name: Mozilla Thunderbird < 60.0 Multiple Vulnerabilities (macOS)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Firefox 61
Timeline
06/14/2018 🔍06/26/2018 🔍
06/26/2018 🔍
06/26/2018 🔍
06/26/2018 🔍
06/27/2018 🔍
06/28/2018 🔍
08/20/2018 🔍
10/18/2018 🔍
11/26/2025 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: MFSA 2018-15
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2018-12367 (🔍)
GCVE (CVE): GCVE-0-2018-12367
GCVE (VulDB): GCVE-100-120057
OVAL: 🔍
SecurityFocus: 104561 - Mozilla Firefox and Firefox ESR Multiple Security Vulnerabilities
SecurityTracker: 1041193
See also: 🔍
Entry
Created: 06/28/2018 09:11Updated: 11/26/2025 08:20
Changes: 06/28/2018 09:11 (78), 02/23/2020 08:22 (8), 03/29/2023 11:20 (4), 11/26/2025 08:20 (15)
Complete: 🔍
Cache ID: 216::103
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
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