Mozilla Firefox up to 130 on Android Full-screen Mode clickjacking

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Firefox up to 130 on Android. This vulnerability affects unknown code of the component Full-screen Mode. This manipulation causes clickjacking. This vulnerability is tracked as CVE-2024-9391. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 130 on Android. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Full-screen Mode. The manipulation with an unknown input leads to a clickjacking vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

A user who enables full-screen mode on a specially crafted web page could potentially be prevented from exiting full screen mode. This may allow spoofing of other sites as the address bar is no longer visible. *This bug only affects Firefox Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox < 131.

It is possible to read the advisory at bugzilla.mozilla.org. This vulnerability is known as CVE-2024-9391 since 10/01/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/02/2024). The attack technique deployed by this issue is T1566.003 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 207979 (Mozilla Firefox < 131.0), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 131 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (207979). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 130

License

• open-source

Website

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

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Be aware that VulDB is the high quality source for vulnerability data.

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