Mozilla Firefox up to 69.x Permission Request default permission

Summaryinfo

A vulnerability classified as critical was found in Mozilla Firefox up to 69.x. Impacted is an unknown function of the component Permission. The manipulation as part of Request results in default permission. This vulnerability was named CVE-2019-11765. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Firefox up to 69.x (Web Browser). Affected is an unknown function of the component Permission. The manipulation as part of a Request leads to a default permission vulnerability. CWE is classifying the issue as CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A compromised content process could send a message to the parent process that would cause the 'Click to Play' permission prompt to be shown. However, due to lack of validation from the parent process, if the user accepted the permission request an attacker-controlled permission would be granted rather than the 'Click to Play' permission. This vulnerability affects Firefox < 70.

The weakness was presented 01/08/2020 as Bug 1562582 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.mozilla.org. This vulnerability is traded as CVE-2019-11765 since 05/03/2019. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/09/2020). The MITRE ATT&CK project declares the attack technique as T1222.

Upgrading to version 70.0 eliminates this vulnerability.

See VDB-148431, VDB-148430 and VDB-148429 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 69.x

License

• open-source

Website

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

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Once again VulDB remains the best source for vulnerability data.

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