Mozilla Firefox/Thunderbird/Firefox ESR on Windows Windows Sandbox information disclosure

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Firefox, Thunderbird and Firefox ESR on Windows. The impacted element is an unknown function of the component Windows Sandbox. This manipulation causes information disclosure. This vulnerability is registered as CVE-2019-11694. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Mozilla Firefox, Thunderbird and Firefox ESR on Windows (Web Browser) (affected version unknown). Affected by this vulnerability is an unknown functionality of the component Windows Sandbox. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

A vulnerability exists in the Windows sandbox where an uninitialized value in memory can be leaked to a renderer from a broker when making a call to access an otherwise unavailable file. This results in the potential leaking of information stored at that memory location. *Note: this issue only occurs on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

The weakness was published 07/23/2019. This vulnerability is known as CVE-2019-11694 since 05/03/2019. 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 attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 249841 (Linux Distros Unpatched Vulnerability : CVE-2019-11694), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371797 (Mozilla Firefox Multiple Security Vulnerabilities (MFSA 2019-13,MFSA2019-14)).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (249841). Similar entries are available at VDB-138479, VDB-138474, VDB-138473 and VDB-138472. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox
• Firefox ESR
• Thunderbird

License

• open-source

Website

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

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Entryinfo

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