Mozilla Firefox up to 129.x Internal Browser Event Interface information disclosure

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Firefox up to 129.x. This vulnerability affects unknown code of the component Internal Browser Event Interface. The manipulation leads to information disclosure. This vulnerability is traded as CVE-2024-8382. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 129.x. It has been rated as problematic. This issue affects an unknown functionality of the component Internal Browser Event Interface. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Internal browser event interfaces were exposed to web content when privileged EventHandler listener callbacks ran for those events. Web content that tried to use those interfaces would not be able to use them with elevated privileges, but their presence would indicate certain browser features had been used, such as when a user opened the Dev Tools console. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Firefox ESR < 115.15.

The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2024-8382 since 09/03/2024. The exploitation is known to be easy. 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 price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/05/2025). MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 207937 (Rocky Linux 9 : firefox (RLSA-2024:6681)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 130 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (207937) and EUVD (EUVD-2024-49138). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 129

License

• open-source

Website

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

CPE 2.3info

• 🔍
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CPE 2.2info

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

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