Mozilla Firefox up to 127.x SELECT Element permission

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 127.x and classified as critical. This impacts an unknown function of the component SELECT Element Handler. The manipulation results in permission. This vulnerability was named CVE-2024-6607. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 127.x. It has been classified as critical. Affected is an unknown code of the component SELECT Element Handler. The manipulation with an unknown input leads to a permission vulnerability. CWE is classifying the issue as CWE-275. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

It was possible to prevent a user from exiting pointerlock when pressing escape and to overlay customValidity notifications from a `<select>` element over certain permission prompts. This could be used to confuse a user into giving a site unintended permissions. This vulnerability affects Firefox < 128.

The advisory is shared for download at bugzilla.mozilla.org. This vulnerability is traded as CVE-2024-6607 since 07/09/2024. The exploitability is told to be easy. 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 $5k-$25k (estimation calculated on 07/16/2025). The MITRE ATT&CK project declares the attack technique as T1222.

The vulnerability scanner Nessus provides a plugin with the ID 208022 (SUSE SLED15 / SLES15 / openSUSE 15 Security Update : MozillaThunderbird (SUSE-SU-2024:3507-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 128 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (208022). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 127

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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