| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.9 | $0-$5k | 0.00 |
Summary
A vulnerability identified as critical has been detected in Mozilla Firefox up to 51.x. Affected by this vulnerability is an unknown functionality of the component Error Handler. The manipulation of the argument ErrorResult leads to 7pk error. This vulnerability is uniquely identified as CVE-2017-5401. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.
Details
A vulnerability was found in Mozilla Firefox up to 51.x (Web Browser). It has been rated as critical. This issue affects some unknown functionality of the component Error Handler. The manipulation of the argument ErrorResult with an unknown input leads to a 7pk error vulnerability. Using CWE to declare the problem leads to CWE-388. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
A crash triggerable by web content in which an "ErrorResult" references unassigned memory due to a logic error. The resulting crash may be exploitable. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
The bug was discovered 03/07/2017. The weakness was disclosed 03/07/2017 as MFSA 2017-05 as confirmed security advisory (Website). The advisory is shared at mozilla.org. The identification of this vulnerability is CVE-2017-5401 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. Technical details are known, but no exploit is available.
The vulnerability scanner Nessus provides a plugin with the ID 101437 (Virtuozzo 6 : thunderbird (VZLSA-2017-0498)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Virtuozzo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157398 (Oracle Enterprise Linux Security Update for firefox (ELSA-2017-0461)).
Upgrading to version 52 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 (101437), SecurityFocus (BID 96677†) and SecurityTracker (ID 1037966†). The entries VDB-97756, VDB-97758, VDB-97759 and VDB-97760 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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: 7pk errorCWE: CWE-388
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: 101437
Nessus Name: Virtuozzo 6 : thunderbird (VZLSA-2017-0498)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 881932
OpenVAS Name: CentOS Update for thunderbird CESA-2017:0498 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 52
Timeline
01/13/2017 🔍03/07/2017 🔍
03/07/2017 🔍
03/07/2017 🔍
03/08/2017 🔍
03/08/2017 🔍
03/10/2017 🔍
07/13/2017 🔍
06/11/2018 🔍
11/26/2025 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: MFSA 2017-05
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2017-5401 (🔍)
GCVE (CVE): GCVE-0-2017-5401
GCVE (VulDB): GCVE-100-97757
OVAL: 🔍
SecurityFocus: 96677 - Mozilla Firefox and Thunderbird CVE-2017-5401 Memory Corruption Vulnerability
OSVDB: - CVE-2017-5401 - Mozilla - Firefox - Memory Corruption Issue
SecurityTracker: 1037966
See also: 🔍
Entry
Created: 03/10/2017 08:14Updated: 11/26/2025 02:01
Changes: 03/10/2017 08:14 (83), 08/18/2020 12:06 (6), 11/26/2025 02:01 (18)
Complete: 🔍
Cache ID: 216::103
If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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