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: 8.1EPSS: 0%CPEs: 2EXPL: 0CVE-2021-29991
https://notcve.org/view.php?id=CVE-2021-29991
Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox < 91.0.1 and Thunderbird < 91.0.1. Firefox aceptaba incorrectamente una nueva línea en un encabezado HTTP/3, interpretándola como dos encabezados separados. Esto permitía un ataque de división de encabezados contra servidores que usaban HTTP/3. • https://bugzilla.mozilla.org/show_bug.cgi?id=1724896 https://www.mozilla.org/security/advisories/mfsa2021-37 • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •
CVSS: 8.1EPSS: 0%CPEs: 1EXPL: 0CVE-2021-29993
https://notcve.org/view.php?id=CVE-2021-29993
Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92. Firefox para Android permitía una navegación mediante el protocolo "intent://", lo que podía ser usado para causar bloqueos y falsificaciones de la Interfaz de Usuario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1712242%2C1708767%2C1712240%2C1708544%2C1729259 https://www.mozilla.org/security/advisories/mfsa2021-38 •
CVSS: 6.5EPSS: 0%CPEs: 6EXPL: 1CVE-2021-38492
https://notcve.org/view.php?id=CVE-2021-38492
When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92, Thunderbird < 91.1, Thunderbird < 78.14, Firefox ESR < 78.14, and Firefox ESR < 91.1. Cuando se delegaba la navegación al sistema operativo, Firefox aceptaba el esquema "mk" que podía permitir a atacantes lanzar páginas y ejecutar scripts en Internet Explorer en modo no privilegiado. • https://bugzilla.mozilla.org/show_bug.cgi?id=1721107 https://security.gentoo.org/glsa/202208-14 https://www.mozilla.org/security/advisories/mfsa2021-38 https://www.mozilla.org/security/advisories/mfsa2021-39 https://www.mozilla.org/security/advisories/mfsa2021-40 https://www.mozilla.org/security/advisories/mfsa2021-41 https://www.mozilla.org/security/advisories/mfsa2021-42 •
CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2021-38494
https://notcve.org/view.php?id=CVE-2021-38494
Mozilla developers reported memory safety bugs present in Firefox 91. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 92. Los desarrolladores de Mozilla informaron de bugs de seguridad de memoria presentes en Firefox versión 91. Algunos de estos bugs mostraban evidencias de corrupción de memoria y suponemos que con suficiente esfuerzo algunos de ellos podrían haber sido explotados para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1723920%2C1725638 https://www.mozilla.org/security/advisories/mfsa2021-38 • CWE-787: Out-of-bounds Write •