CVSS: 6.1EPSS: 0%CPEs: 6EXPL: 0CVE-2021-38509 – Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain
https://notcve.org/view.php?id=CVE-2021-38509
Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Debido a una secuencia inusual de eventos controlados por el atacante, un diálogo Javascript alert() con contenido arbitrario (aunque sin estilo) podría mostrarse encima de una página web no controlada de la elección del atacante. Esta vulnerabilidad afecta a Firefox versiones anteriores a 94, Thunderbird versiones anteriores a 91.3 y Firefox ESR versiones anteriores a 91.3 • https://bugzilla.mozilla.org/show_bug.cgi?id=1718571 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: 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: 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: 8.8EPSS: 0%CPEs: 8EXPL: 0CVE-2021-38496 – Mozilla: Use-after-free in MessageTask
https://notcve.org/view.php?id=CVE-2021-38496
During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. Durante las operaciones en MessageTasks, una tarea puede haber sido eliminada mientras todavía estaba programada, resultando en una corrupción de memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.15, Thunderbird versiones anteriores a 91.2, Firefox ESR versiones anteriores a 91.2, Firefox ESR versiones anteriores a 78.15 y Firefox versiones anteriores a 93 • https://bugzilla.mozilla.org/show_bug.cgi?id=1725335 https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://www.debian.org/security/2022/dsa-5034 https://www.mozilla.org/security/advisories/mfsa2021-43 https://www.mozilla.org/security/advisories/mfsa2021-44 https://www.mozilla.org/security/advisories/mfsa2021-45 https://www.mozilla.org/security/advisories/mfsa2021-46 https://www.mozilla.org/security/advisories/mfsa2021-47 https://access.redhat.com/security/cve/CVE • CWE-416: Use After Free •
CVSS: 8.8EPSS: 0%CPEs: 8EXPL: 0CVE-2021-38500 – Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2
https://notcve.org/view.php?id=CVE-2021-38500
Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. Los desarrolladores de Mozilla informaron de bugs de seguridad de memoria presentes en Firefox 92 y Firefox ESR 91.1. 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=1725854%2C1728321 https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html https://www.debian.org/security/2022/dsa-5034 https://www.mozilla.org/security/advisories/mfsa2021-43 https://www.mozilla.org/security/advisories/mfsa2021-44 https://www.mozilla.org/security/advisories/mfsa2021-45 https://www.mozilla.org/security/advisories/mfsa2021-46 https://www.mozilla.org/security/advisories/mfsa2021-47 https://access.redhat.com/security& • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •