Mozilla Firefox up to 55 on MacOS X Tibetan/Arabic Charset Address input validation

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.7 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Mozilla Firefox up to 55 on MacOS X. It has been classified as problematic. This issue affects some unknown processing of the component Tibetan/Arabic Charset. The manipulation leads to input validation (Address). This vulnerability is documented as CVE-2017-7825. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.
Details
A vulnerability was found in Mozilla Firefox up to 55 on MacOS X (Web Browser). It has been rated as critical. This issue affects an unknown code block of the component Tibetan/Arabic Charset. The manipulation with an unknown input leads to a input validation vulnerability (Address). Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.
The bug was discovered 09/28/2017. The weakness was released 09/28/2017 by Martin as MFSA 2017-21 as confirmed security advisory (Website). The advisory is shared at mozilla.org. The identification of this vulnerability is CVE-2017-7825. 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.
The vulnerability scanner Nessus provides a plugin with the ID 108820 (GLSA-201803-14 : Mozilla Thunderbird: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370584 (Mozilla Firefox Multiple Vulnerabilities. (mfsa2017-21,mfsa2017-22)).
Upgrading to version 56 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 (108820), SecurityFocus (BID 101059†) and SecurityTracker (ID 1039465†). Entries connected to this vulnerability are available at VDB-107430, VDB-107431, VDB-107432 and VDB-107433. 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: 5.8VulDB Meta Temp Score: 5.7
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.3
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
Name: AddressClass: Input validation / Address
CWE: 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: 108820
Nessus Name: GLSA-201803-14 : Mozilla Thunderbird: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 803347
OpenVAS Name: Mozilla Firefox ESR Security Updates(mfsa_2017-21_2017-22)-MAC OS X
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 56
Timeline
04/12/2017 🔍09/28/2017 🔍
09/28/2017 🔍
09/28/2017 🔍
09/28/2017 🔍
09/29/2017 🔍
10/04/2017 🔍
04/04/2018 🔍
06/11/2018 🔍
11/26/2025 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: MFSA 2017-21
Researcher: Khalil Zhani, Fran, ccedil, ois Marier, Martin Thomson. (Martin)
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2017-7825 (🔍)
GCVE (CVE): GCVE-0-2017-7825
GCVE (VulDB): GCVE-100-107441
SecurityFocus: 101059 - Mozilla Firefox and Firefox ESR Multiple Security Vulnerabilities
SecurityTracker: 1039465
See also: 🔍
Entry
Created: 10/04/2017 11:52Updated: 11/26/2025 06:09
Changes: 10/04/2017 11:52 (83), 11/21/2019 20:05 (4), 01/15/2021 12:45 (4), 01/15/2021 12:52 (1), 11/26/2025 06:09 (16)
Complete: 🔍
Cache ID: 216::103
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
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