CVSS: 5.4EPSS: 0%CPEs: 6EXPL: 0CVE-2021-43546 – Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed
https://notcve.org/view.php?id=CVE-2021-43546
It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. Se han podido recrear ataques anteriores de suplantación del cursor contra usuarios con un cursor nativo ampliado. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 91.4.0, Firefox ESR versiones anteriores a 91.4.0 y Firefox versiones anteriores a 95 • https://bugzilla.mozilla.org/show_bug.cgi?id=1737751 https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.debian.org/security/2021/dsa-5026 https://www.debian.org/security/2022/dsa-5034 https://www.mozilla.org/security/advisories/mfsa2021-52 https://www.mozilla.org/security/advisories/mfsa2021-53 • CWE-1021: Improper Restriction of Rendered UI Layers or Frames •
CVSS: 10.0EPSS: 0%CPEs: 6EXPL: 0CVE-2021-38503 – Mozilla: iframe sandbox rules did not apply to XSLT stylesheets
https://notcve.org/view.php?id=CVE-2021-38503
The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Las reglas del sandbox de iframe no se aplicaban correctamente a las hojas de estilo XSLT, permitiendo a un iframe omitir restricciones como la ejecución de scripts o la navegación por el marco de nivel superior. Esta vulnerabilidad afecta a Firefox versiones anteriores a 94, Thunderbird versiones anteriores a 91.3 y Firefox ESR versiones anteriores a 91.3 The Mozilla Foundation Security Advisory describes this flaw as: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. • https://bugzilla.mozilla.org/show_bug.cgi?id=1729517 https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.debian.org/security/2021/dsa-5026 https://www.debian.org/security/2022/dsa-5034 https://www.mozilla.org/security/advisories/mfsa2021-48 https://www.mozilla.org/security/advisories/mfsa2021-49 • CWE-732: Incorrect Permission Assignment for Critical Resource CWE-863: Incorrect Authorization •
CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0CVE-2021-38504 – Mozilla: Use-after-free in file picker dialog
https://notcve.org/view.php?id=CVE-2021-38504
When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after-free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Cuando se interactúa con el diálogo del selector de archivos de un elemento de entrada HTML con webkitdirectory configurado, podría haberse producido un uso de memoria previamente liberada, conllevando a una corrupción de memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox versiones anteriores a 94, Thunderbird versiones anteriores a 91.3 y Firefox ESR versiones anteriores a 91.3 The Mozilla Foundation Security Advisory describes this flaw as: When interacting with an HTML input element's file picker dialog with `webkitdirectory` set, a use-after-free could have resulted, leading to memory corruption and a potentially exploitable crash. • https://bugzilla.mozilla.org/show_bug.cgi?id=1730156 https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.debian.org/security/2021/dsa-5026 https://www.debian.org/security/2022/dsa-5034 https://www.mozilla.org/security/advisories/mfsa2021-48 https://www.mozilla.org/security/advisories/mfsa2021-49 • CWE-416: Use After Free •
CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0CVE-2021-38506 – Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning
https://notcve.org/view.php?id=CVE-2021-38506
Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Mediante de una serie de navegaciones, Firefox podría haber entrado en modo de pantalla completa sin notificación o advertencia al usuario. Esto podría conllevar a ataques de suplantación de identidad en la Interfaz de Usuario del navegador, incluido el phishing. • https://bugzilla.mozilla.org/show_bug.cgi?id=1730750 https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.debian.org/security/2021/dsa-5026 https://www.debian.org/security/2022/dsa-5034 https://www.mozilla.org/security/advisories/mfsa2021-48 https://www.mozilla.org/security/advisories/mfsa2021-49 • CWE-1021: Improper Restriction of Rendered UI Layers or Frames •
CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0CVE-2021-38507 – Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports
https://notcve.org/view.php?id=CVE-2021-38507
The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP address (e.g. port 8443) did not opt-in to opportunistic encryption; a network attacker could forward a connection from the browser to port 443 to port 8443, causing the browser to treat the content of port 8443 as same-origin with HTTP. This was resolved by disabling the Opportunistic Encryption feature, which had low usage. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. La funcionalidad Opportunistic Encryption de HTTP2 (RFC 8164) permite que una conexión sea actualizada transparentemente a TLS mientras conserva las propiedades visuales de una conexión HTTP, incluyendo el mismo origen con conexiones no cifradas en el puerto 80. • https://bugzilla.mozilla.org/show_bug.cgi?id=1730935 https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.debian.org/security/2021/dsa-5026 https://www.debian.org/security/2022/dsa-5034 https://www.mozilla.org/security/advisories/mfsa2021-48 https://www.mozilla.org/security/advisories/mfsa2021-49 • CWE-346: Origin Validation Error CWE-829: Inclusion of Functionality from Untrusted Control Sphere •