Mozilla Firefox 43 on Mac OS X File Download Dialog Click cross site scripting

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.
5.9$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Mozilla Firefox 43 on Mac OS X. The affected element is an unknown function of the component File Download Dialog. Performing a manipulation as part of Click results in cross site scripting. This vulnerability is identified as CVE-2016-1941. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox 43 on Mac OS X (Web Browser). It has been classified as critical. This affects some unknown functionality of the component File Download Dialog. The manipulation as part of a Click leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 01/26/2016 by Jordi Chancel as MFSA2016-08 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. This vulnerability is uniquely identified as CVE-2016-1941 since 01/19/2016. 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. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK. The advisory points out:

Security researcher Jordi Chancel reported an issue on OS X where the delay between the download dialog getting focus and the button getting enabled was too short. If an attacker is able to induce the user to double-click in a specific location, they can then pass the second click through to the dialog below, leading to unintentional actions such as the running of downloaded software.

The vulnerability scanner Nessus provides a plugin with the ID 88459 (Firefox < 44 Multiple Vulnerabilities (Mac OS X)), 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 124615 (Mozilla Firefox Multiple Vulnerabilities (MFSA 2016-01 to MFSA 2016-12)).

Upgrading to version 44 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 (88459), SecurityFocus (BID 81958†) and Vulnerability Center (SBV-56223†). Further details are available at bugzilla.mozilla.org. Entries connected to this vulnerability are available at VDB-80695 and VDB-80688. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.1
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 88459
Nessus Name: Firefox < 44 Multiple Vulnerabilities (Mac OS X)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803852
OpenVAS Name: Mozilla Firefox Multiple Vulnerabilities - Jan16 (Mac OS X)
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 44

Timelineinfo

01/19/2016 🔍
01/25/2016 +6 days 🔍
01/25/2016 +0 days 🔍
01/26/2016 +0 days 🔍
01/26/2016 +0 days 🔍
01/26/2016 +0 days 🔍
01/27/2016 +0 days 🔍
01/27/2016 +0 days 🔍
01/31/2016 +3 days 🔍
07/06/2022 +2348 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA2016-08
Researcher: Jordi Chancel
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1941 (🔍)
GCVE (CVE): GCVE-0-2016-1941
GCVE (VulDB): GCVE-100-80691
SecurityFocus: 81958 - Mozilla Firefox CVE-2016-1941 Security Bypass Vulnerability
SecurityTracker: 1034825
Vulnerability Center: 56223 - Mozilla Firefox <44 on OS X Remote Unspecified Vulnerability via Click Event, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 01/27/2016 13:43
Updated: 07/06/2022 12:37
Changes: 01/27/2016 13:43 (77), 07/23/2018 07:54 (14), 07/06/2022 12:37 (5)
Complete: 🔍
Cache ID: 216:9E3:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!