Mozilla Firefox up to 128 Content Security Policy cross site scripting

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 128 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Content Security Policy Handler. Such manipulation leads to cross site scripting. This vulnerability is documented as CVE-2024-7524. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Firefox up to 128. Affected by this issue is an unknown code of the component Content Security Policy Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

Firefox adds web-compatibility shims in place of some tracking scripts blocked by Enhanced Tracking Protection. On a site protected by Content Security Policy in "strict-dynamic" mode, an attacker able to inject an HTML element could have used a DOM Clobbering attack on some of the shims and achieved XSS, bypassing the CSP strict-dynamic protection. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.

The advisory is available at bugzilla.mozilla.org. This vulnerability is handled as CVE-2024-7524 since 08/06/2024. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for 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 207803 (Oracle Linux 7 : firefox (ELSA-2024-5324)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 129 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (207803). 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

• 128

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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