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CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0

24 Oct 2019 — A compromised content process could send a message to the parent process that would cause the 'Click to Play' permission prompt to be shown. However, due to lack of validation from the parent process, if the user accepted the permission request an attacker-controlled permission would be granted rather than the 'Click to Play' permission. This vulnerability affects Firefox < 70. Un proceso de contenido comprometido podría enviar un mensaje al proceso principal que causaría que la petición del permiso "Click ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1562582 • CWE-276: Incorrect Default Permissions •

CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 0

23 Oct 2019 — When following the value's prototype chain, it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Siguiendo la cadena de prototipos de valor, era posible retener una referencia a una configuración regional, eliminarla y, posteriormente, hacer referencia a ella. Esto resultó en un uso de la memoria previamente libera... • https://bugzilla.mozilla.org/show_bug.cgi?id=1577107 • CWE-416: Use After Free •

CVSS: 6.1EPSS: 0%CPEs: 4EXPL: 0

23 Oct 2019 — If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Si dos documentos del mismo origen configuran a document.domain de manera diferente para convertirse en origen cruzado, es posible llamar arbitrariamente a DOM methods/getters/setters en la ventana ahora de origen cruzado. Esta vulnerabili... • https://bugzilla.mozilla.org/show_bug.cgi?id=1582857 • CWE-346: Origin Validation Error CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

CVSS: 5.8EPSS: 0%CPEs: 4EXPL: 0

23 Oct 2019 — By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Mediante el uso de un formulario con un URI de datos, fue posible conseguir acceso al objeto JSONView privilegiado que había sido clonado en contenido. El impacto de exponer ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1561502 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-749: Exposed Dangerous Method or Function CWE-862: Missing Authorization •

CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 1

23 Oct 2019 — Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.2, and Firefox ESR < 68.2. Philipp, miembro de la comunidad de Mozilla, reportó un bug de seguridad de la memoria presente en Firefox versión 68 cuando 360 Total Securi... • https://bugzilla.mozilla.org/show_bug.cgi?id=1536227 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 8.8EPSS: 2%CPEs: 4EXPL: 0

23 Oct 2019 — An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Un atacante podría haber causado que 4 bytes de salida HMAC se escribieran más allá del final de un búfer almacenado en la pila. Esto podría ser usado por un atacante para ejecutar código arbitrario o, más probablemente, c... • https://bugzilla.mozilla.org/show_bug.cgi?id=1577953 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •

CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 0

23 Oct 2019 — A fixed-size stack buffer could overflow in nrappkit when doing WebRTC signaling. This resulted in a potentially exploitable crash in some instances. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Un búfer de pila de tamaño fijo podría desbordarse en nrappkit cuando realiza la señalización de WebRTC. Esto resultó en un bloqueo explotable potencialmente en algunos casos. • https://bugzilla.mozilla.org/show_bug.cgi?id=1577719 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVSS: 6.1EPSS: 0%CPEs: 4EXPL: 0

23 Oct 2019 — Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Si no se ma... • https://bugzilla.mozilla.org/show_bug.cgi?id=1584216 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 8.8EPSS: 1%CPEs: 4EXPL: 1

23 Oct 2019 — Mozilla developers and community members reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Los desarrolladores de Mozilla y los miembros de la comunidad reportaron bugs de seguridad de memoria presentes en Firefox versión 69 y Firefox ESR versión 68.1. A... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1558522%2C1577061%2C1548044%2C1571223%2C1573048%2C1578933%2C1575217%2C1583684%2C1586845%2C1581950%2C1583463%2C1586599 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVSS: 7.0EPSS: 0%CPEs: 3EXPL: 0

27 Sep 2019 — The Mozilla Maintenance Service does not guard against files being hardlinked to another file in the updates directory, allowing for the replacement of local files, including the Maintenance Service executable, which is run with privileged access. Additionally, there was a race condition during checks for junctions and symbolic links by the Maintenance Service, allowing for potential local file and directory manipulation to be undetected in some circumstances. This allows for potential privilege escalation ... • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •