CVE-2023-25730

Summary

A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected products we track (2)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

• NVD record
• https://bugzilla.mozilla.org/show_bug.cgi?id=1794622Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-05/Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-06/Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-07/Advisory