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CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0

Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6. Las páginas de extensión accesibles desde la web (páginas con un esquema moz-extension://) no aplicaban correctamente la directiva frame-ancestors cuando se usaba en la Política de seguridad de contenido de la extensión web. Esta vulnerabilidad afecta a Firefox &lt; 97, Thunderbird &lt; 91.6 y Firefox ESR &lt; 91.6. The Mozilla Foundation Security Advisory describes this flaw as: Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy. • https://bugzilla.mozilla.org/show_bug.cgi?id=1745566 https://www.mozilla.org/security/advisories/mfsa2022-04 https://www.mozilla.org/security/advisories/mfsa2022-05 https://www.mozilla.org/security/advisories/mfsa2022-06 https://access.redhat.com/security/cve/CVE-2022-22761 https://bugzilla.redhat.com/show_bug.cgi?id=2053239 • CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

CVSS: 9.6EPSS: 0%CPEs: 3EXPL: 0

If a document created a sandboxed iframe without <code>allow-scripts</code>, and subsequently appended an element to the iframe's document that e.g. had a JavaScript event handler - the event handler would have run despite the iframe's sandbox. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6. Si un documento creó un iframe en la sandboxed sin <code>allow-scripts</code> y posteriormente agregó un elemento al documento del iframe que, por ejemplo, tenía un controlador de eventos JavaScript, el controlador de eventos se habría ejecutado a pesar de la sandbox del iframe. Esta vulnerabilidad afecta a Firefox &lt; 97, Thunderbird &lt; 91.6 y Firefox ESR &lt; 91.6. The Mozilla Foundation Security Advisory describes this flaw as: If a document created a sandboxed iframe without allow-scripts and subsequently appended an element to the iframe's document that, for example, had a JavaScript event handler - the event handler would have run despite the iframe's sandbox. • https://bugzilla.mozilla.org/show_bug.cgi?id=1739957 https://www.mozilla.org/security/advisories/mfsa2022-04 https://www.mozilla.org/security/advisories/mfsa2022-05 https://www.mozilla.org/security/advisories/mfsa2022-06 https://access.redhat.com/security/cve/CVE-2022-22759 https://bugzilla.redhat.com/show_bug.cgi?id=2053242 • CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0

Mozilla developers Christian Holler and Jason Kratzer reported memory safety bugs present in Firefox 95. 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 < 96. Los desarrolladores de Mozilla, Christian Holler y Jason Kratzer, informaron sobre errores de seguridad de la memoria presentes en Firefox 95. Algunos de estos errores mostraron evidencia de corrupción de la memoria y suponemos que con suficiente esfuerzo algunos de ellos podrían haberse aprovechado para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1741210%2C1742770 https://www.mozilla.org/security/advisories/mfsa2022-01 • CWE-787: Out-of-bounds Write •

CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0

Mozilla developers Calixte Denizet, Kershaw Chang, Christian Holler, Jason Kratzer, Gabriele Svelto, Tyson Smith, Simon Giesecke, and Steve Fink reported memory safety bugs present in Firefox 95 and Firefox ESR 91.4. 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 ESR < 91.5, Firefox < 96, and Thunderbird < 91.5. Los desarrolladores de Mozilla, Calixte Denizet, Kershaw Chang, Christian Holler, Jason Kratzer, Gabriele Svelto, Tyson Smith, Simon Giesecke y Steve Fink informaron sobre errores de seguridad de la memoria presentes en Firefox 95 y Firefox ESR 91.4. Algunos de estos errores mostraron evidencia de corrupción de memoria y suponemos que con suficiente esfuerzo algunos de ellos podrían haberse aprovechado para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1664149%2C1737816%2C1739366%2C1740274%2C1740797%2C1741201%2C1741869%2C1743221%2C1743515%2C1745373%2C1746011 https://www.mozilla.org/security/advisories/mfsa2022-01 https://www.mozilla.org/security/advisories/mfsa2022-02 https://www.mozilla.org/security/advisories/mfsa2022-03 https://access.redhat.com/security/cve/CVE-2022-22751 https://bugzilla.redhat.com/show_bug.cgi?id=2039574 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0

When navigating from inside an iframe while requesting fullscreen access, an attacker-controlled tab could have made the browser unable to leave fullscreen mode. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5. Al navegar desde dentro de un iframe mientras se solicita acceso a pantalla completa, una pestaña controlada por un atacante podría haber impedido que el navegador saliera del modo de pantalla completa. Esta vulnerabilidad afecta a Firefox ESR &lt; 91.5, Firefox &lt; 96 y Thunderbird &lt; 91.5. A flaw was found in Mozilla. • https://bugzilla.mozilla.org/show_bug.cgi?id=1739220 https://www.mozilla.org/security/advisories/mfsa2022-01 https://www.mozilla.org/security/advisories/mfsa2022-02 https://www.mozilla.org/security/advisories/mfsa2022-03 https://access.redhat.com/security/cve/CVE-2022-22743 https://bugzilla.redhat.com/show_bug.cgi?id=2039561 • CWE-1021: Improper Restriction of Rendered UI Layers or Frames •