| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.9 | $0-$5k | 0.00 |
Summary
A vulnerability has been found in Mozilla Firefox up to 52 and classified as critical. This issue affects some unknown processing of the component Sandbox. The manipulation leads to access control. This vulnerability is listed as CVE-2017-5456. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.
Details
A vulnerability was found in Mozilla Firefox up to 52 (Web Browser). It has been rated as critical. This issue affects an unknown part of the component Sandbox. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability.
The bug was discovered 04/19/2017. The weakness was presented 04/19/2017 by Huzaifa Sidhpurwala with Zero Day Initiative as MFSA 2017-10 as confirmed security advisory (Website). The advisory is shared at mozilla.org. The identification of this vulnerability is CVE-2017-5456 since 01/13/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.
The vulnerability scanner Nessus provides a plugin with the ID 100687 (EulerOS 2.0 SP1 : firefox (EulerOS-SA-2017-1092)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Huawei Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276572 (Fedora Security Update for firefox (FEDORA-2017-31c64a0bbf)).
Upgrading to version 53 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 (100687), SecurityFocus (BID 97940†) and SecurityTracker (ID 1038320†). See VDB-100289, VDB-100290, VDB-100291 and VDB-100292 for similar entries. 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: 8.0VulDB Meta Temp Score: 7.9
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
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: Access controlCWE: 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: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 100687
Nessus Name: EulerOS 2.0 SP1 : firefox (EulerOS-SA-2017-1092)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 881932
OpenVAS Name: CentOS Update for firefox CESA-2017:1106 centos7
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Firefox 53
Timeline
01/13/2017 🔍04/19/2017 🔍
04/19/2017 🔍
04/19/2017 🔍
04/19/2017 🔍
04/20/2017 🔍
04/20/2017 🔍
06/09/2017 🔍
06/11/2018 🔍
11/26/2025 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: MFSA 2017-10
Researcher: Huzaifa Sidhpurwala
Organization: Zero Day Initiative
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2017-5456 (🔍)
GCVE (CVE): GCVE-0-2017-5456
GCVE (VulDB): GCVE-100-100313
OVAL: 🔍
SecurityFocus: 97940 - Mozilla Firefox Multiple Security Vulnerabilities
OSVDB: - CVE-2017-5456 - Mozilla - Firefox - Security Bypass Issue
SecurityTracker: 1038320
See also: 🔍
Entry
Created: 04/20/2017 14:54Updated: 11/26/2025 04:14
Changes: 04/20/2017 14:54 (79), 09/18/2020 14:43 (8), 12/21/2020 07:37 (2), 08/26/2024 18:47 (17), 11/26/2025 04:14 (1)
Complete: 🔍
Cache ID: 216::103
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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