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CVSS: 6.5EPSS: 0%CPEs: 6EXPL: 0

Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. Las URL relativas que comenzaban con tres barras se analizaban incorrectamente y se podía utilizar una parte de path-traversal "/../" en la ruta para anular el host especificado. Esto podría contribuir a problemas de seguridad en los sitios web. • https://bugzilla.mozilla.org/show_bug.cgi?id=1858570 https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html https://www.debian.org/security/2023/dsa-5561 https://www.mozilla.org/security/advisories/mfsa2023-49 https://www.mozilla.org/security/advisories/mfsa2023-50 https://www.mozilla.org/security/advisories/mfsa2023-52 https://access.redhat.com/security/cve/CVE-2023-6209 https://bugzilla.redhat.com/ • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •

CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0

When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. Al usar X11, el texto seleccionado por la página usando la API de selección se copiaba erróneamente en la selección principal, un almacenamiento temporal similar al portapapeles. *Este error sólo afecta a Thunderbird en X11. Otros sistemas no se ven afectados.* Esta vulnerabilidad afecta a Firefox &lt; 120, Firefox &lt; 115.5 y Thunderbird &lt; 115.5.0. • https://bugzilla.mozilla.org/show_bug.cgi?id=1855345 https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html https://www.debian.org/security/2023/dsa-5561 https://www.mozilla.org/security/advisories/mfsa2023-49 https://www.mozilla.org/security/advisories/mfsa2023-50 https://www.mozilla.org/security/advisories/mfsa2023-52 https://access.redhat.com/security/cve/CVE-2023-6208 https://bugzilla.redhat.com/ • CWE-1021: Improper Restriction of Rendered UI Layers or Frames •

CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0

Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. La mala gestión de la propiedad provocó un uso después de la liberación en ReadableByteStreams. Esta vulnerabilidad afecta a Firefox &lt; 120, Firefox &lt; 115.5 y Thunderbird &lt; 115.5.0. The Mozilla Foundation Security Advisory describes this flaw as: Ownership mismanagement led to a use-after-free in ReadableByteStreams • https://bugzilla.mozilla.org/show_bug.cgi?id=1861344 https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html https://www.debian.org/security/2023/dsa-5561 https://www.mozilla.org/security/advisories/mfsa2023-49 https://www.mozilla.org/security/advisories/mfsa2023-50 https://www.mozilla.org/security/advisories/mfsa2023-52 https://access.redhat.com/security/cve/CVE-2023-6207 https://bugzilla.redhat.com/ • CWE-416: Use After Free •

CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0

The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. La animación de desvanecimiento negro al salir de la pantalla completa es aproximadamente la duración del retraso anti-clickjacking en las solicitudes de permiso. Era posible utilizar este hecho para sorprender a los usuarios atrayéndolos a hacer clic en el lugar donde el botón de concesión de permiso estaría a punto de aparecer. • https://bugzilla.mozilla.org/show_bug.cgi?id=1857430 https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html https://www.debian.org/security/2023/dsa-5561 https://www.mozilla.org/security/advisories/mfsa2023-49 https://www.mozilla.org/security/advisories/mfsa2023-50 https://www.mozilla.org/security/advisories/mfsa2023-52 https://access.redhat.com/security/cve/CVE-2023-6206 https://bugzilla.redhat.com/ • CWE-1021: Improper Restriction of Rendered UI Layers or Frames •

CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0

It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5. Era posible provocar el uso de un MessagePort después de que ya se había liberado, lo que podría haber provocado un fallo explotable. Esta vulnerabilidad afecta a Firefox &lt; 120, Firefox &lt; 115.5 y Thunderbird &lt; 115.5.0. The Mozilla Foundation Security Advisory describes this flaw as: It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. • https://bugzilla.mozilla.org/show_bug.cgi?id=1854076 https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html https://www.debian.org/security/2023/dsa-5561 https://www.mozilla.org/security/advisories/mfsa2023-49 https://www.mozilla.org/security/advisories/mfsa2023-50 https://www.mozilla.org/security/advisories/mfsa2023-52 https://access.redhat.com/security/cve/CVE-2023-6205 https://bugzilla.redhat.com/ • CWE-416: Use After Free •