Mozilla Firefox up to 53.x DLL Loader untrusted search path

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Mozilla Firefox up to 53.x. The affected element is an unknown function of the component DLL Loader. This manipulation causes untrusted search path. This vulnerability appears as CVE-2017-7755. The attack requires local access. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Mozilla Firefox up to 53.x (Web Browser). Affected by this vulnerability is some unknown processing of the component DLL Loader. The manipulation with an unknown input leads to a untrusted search path vulnerability. The CWE definition for the vulnerability is CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 06/13/2017. The weakness was presented 06/13/2017 by Holger Fuhrmannek (Nils) with Microsoft Vulnerability Research as MFSA 2017-15 as confirmed security advisory (Website). The advisory is shared at mozilla.org. This vulnerability is known as CVE-2017-7755 since 04/12/2017. An attack has to be approached locally. Required for exploitation is a single authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1574 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 101055 (SUSE SLED12 / SLES12 Security Update : MozillaFirefox, MozillaFirefox-branding-SLE (SUSE-SU-2017:1669-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370431 (Mozilla Firefox Multiple Vulnerabilities. (mfsa2017-15,mfsa2017-16)).

Upgrading to version 54.0 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 (101055), SecurityFocus (BID 99057†) and SecurityTracker (ID 1038689†). See VDB-102487, VDB-102488, VDB-102489 and VDB-102490 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Untrusted search path
CWE: CWE-426
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 101055
Nessus Name: SUSE SLED12 / SLES12 Security Update : MozillaFirefox, MozillaFirefox-branding-SLE (SUSE-SU-2017:1669-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803347
OpenVAS Name: Mozilla Firefox ESR Security Updates(mfsa_2017-15_2017-16)-Windows
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Firefox 54.0

Timelineinfo

04/12/2017 🔍
06/13/2017 +62 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
06/13/2017 +0 days 🔍
06/14/2017 +1 days 🔍
06/14/2017 +0 days 🔍
06/27/2017 +13 days 🔍
06/11/2018 +348 days 🔍
11/26/2025 +2725 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2017-15
Researcher: Holger Fuhrmannek (Nils)
Organization: Microsoft Vulnerability Research
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-7755 (🔍)
GCVE (CVE): GCVE-0-2017-7755
GCVE (VulDB): GCVE-100-102493

OVAL: 🔍

SecurityFocus: 99057 - Mozilla Firefox Multiple Security Vulnerabilities
SecurityTracker: 1038689

See also: 🔍

Entryinfo

Created: 06/14/2017 17:35
Updated: 11/26/2025 04:37
Changes: 06/14/2017 17:35 (80), 10/17/2019 18:00 (8), 12/28/2020 14:54 (7), 11/26/2025 04:37 (16)
Complete: 🔍
Cache ID: 216:A29:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!