Mozilla Firefox Black Fade Animation clickjacking

Summaryinfo

A vulnerability, which was classified as problematic, was found in Mozilla Firefox. This issue affects some unknown processing of the component Black Fade Animation Handler. The manipulation results in clickjacking. This vulnerability was named CVE-2023-6206. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Mozilla Firefox (Web Browser) (affected version not known). Affected is some unknown functionality of the component Black Fade Animation Handler. The manipulation with an unknown input leads to a clickjacking vulnerability. CWE is classifying the issue as CWE-451. The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks. This is going to have an impact on integrity. CVE summarizes:

The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox < 115.5, and Thunderbird < 115.5.0.

The weakness was presented 11/21/2023. The advisory is available at bugzilla.mozilla.org. This vulnerability is traded as CVE-2023-6206 since 11/20/2023. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/19/2025). This vulnerability is assigned to T1566.003 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 239860 (TencentOS Server 2: firefox (TSSA-2023:0316)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (239860). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

License

• open-source

Website

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

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

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

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