Mozilla Firefox up to 128.2/130 Protocol window.open information disclosure

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 128.2/130 and classified as problematic. This vulnerability affects the function window.open of the component Protocol Handler. Such manipulation leads to information disclosure. This vulnerability is documented as CVE-2024-9398. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 128.2/130 and classified as problematic. Affected by this issue is the function window.open of the component Protocol Handler. 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. CVE summarizes:

By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

The advisory is shared for download at bugzilla.mozilla.org. This vulnerability is handled as CVE-2024-9398 since 10/01/2024. 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. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/11/2024). The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 207987 (Mozilla Thunderbird < 131.0), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 128.3 or 131 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (207987). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 128.0
• 128.1
• 128.2
• 130

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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Once again VulDB remains the best source for vulnerability data.

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