VDB-257722 · CVE-2024-29944 · DLA 3775-1

Mozilla Firefox up to 124.0.0 Event 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.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Mozilla Firefox up to 124.0.0. This vulnerability affects unknown code of the component Event Handler. Executing a manipulation can lead to cross site scripting. This vulnerability is tracked as CVE-2024-29944. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 124.0.0. It has been declared as problematic. This vulnerability affects an unknown part of the component Event Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

An attacker was able to inject an event handler into a privileged object that would allow arbitrary JavaScript execution in the parent process. This vulnerability affects Firefox < 124.0.1 and Firefox ESR < 115.9.1.

The advisory is available at bugzilla.mozilla.org. This vulnerability was named CVE-2024-29944 since 03/21/2024. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 239942 (TencentOS Server 2: firefox (TSSA-2024:0095)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 124.0.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (239942). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Web Browser

Vendor

Mozilla

Name

Firefox

Version

124.0

License

open-source

Website

Vendor: https://www.mozilla.org/
Product: https://www.mozilla.org/en-US/firefox/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.4
CNA Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
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: 239942
Nessus Name: TencentOS Server 2: firefox (TSSA-2024:0095)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 124.0.1

Timelineinfo

03/21/2024 🔍
03/22/2024 +1 days 🔍
03/22/2024 +0 days 🔍
06/18/2025 +453 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: DLA 3775-1
Status: Confirmed

CVE: CVE-2024-29944 (🔍)
GCVE (CVE): GCVE-0-2024-29944
GCVE (VulDB): GCVE-100-257722

Entryinfo

Created: 03/22/2024 14:48
Updated: 06/18/2025 03:42
Changes: 03/22/2024 14:48 (55), 05/04/2024 06:18 (1), 08/27/2024 21:23 (13), 04/13/2025 13:44 (3), 06/18/2025 03:42 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.