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CVSS: 9.8EPSS: 0%CPEs: 18EXPL: 1

10 Aug 2017 — A use-after-free vulnerability can occur in WebSockets when the object holding the connection is freed before the disconnection operation is finished. This results in an exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55. Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada en WebSockets cuando el objeto que mantiene la conexión se libera antes de que concluya la operación de desconexión. Esto resulta en un cierre inesperado explotable. • http://www.securityfocus.com/bid/100196 • CWE-416: Use After Free •

CVSS: 9.8EPSS: 0%CPEs: 18EXPL: 0

14 Jun 2017 — A use-after-free vulnerability with the frameloader during tree reconstruction while regenerating CSS layout when attempting to use a node in the tree that no longer exists. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Vulnerabilidad de uso de memoria previamente liberada en el frameloader durante la reconstrucción de árboles cuando se regenera el diseño CSS al intentar emplear un nodo en el árbol que ya no existe. Esto... • http://www.securityfocus.com/bid/99040 • CWE-416: Use After Free •

CVSS: 9.8EPSS: 0%CPEs: 18EXPL: 1

14 Jun 2017 — A use-after-free vulnerability with content viewer listeners that results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Vulnerabilidad de uso de memoria previamente liberada en los escuchadores del visor de contenido que resulta en un cierre inesperado potencialmente explotable. La vulnerabilidad afecta a Firefox en versiones anteriores a la 54, Firefox ESR en versiones anteriores a la 52.2 y Thunderbird en versiones anteriores a la ... • http://www.securityfocus.com/bid/99057 • CWE-416: Use After Free •

CVSS: 9.8EPSS: 0%CPEs: 5EXPL: 0

14 Jun 2017 — A use-after-free vulnerability in IndexedDB when one of its objects is destroyed in memory while a method on it is still being executed. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Vulnerabilidad de uso de memoria previamente liberada en IndexedDB cuando uno de sus objetos se destruye en la memoria mientras un método se sigue ejecutando dentro. Esto resulta en un cierre inesperado potencialmente explotable. • http://www.securityfocus.com/bid/99057 • CWE-416: Use After Free •

CVSS: 9.8EPSS: 0%CPEs: 5EXPL: 0

14 Jun 2017 — A use-after-free and use-after-scope vulnerability when logging errors from headers for XML HTTP Requests (XHR). This could result in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Vulnerabilidad de uso de memoria previamente liberada y "use-after-scope" al registrar errores de las cabeceras XHR (XML HTTP Request). Esto podría resultar en un cierre inesperado potencialmente explotable. • http://www.securityfocus.com/bid/99057 • CWE-416: Use After Free •

CVSS: 9.1EPSS: 0%CPEs: 17EXPL: 1

14 Jun 2017 — An out-of-bounds read vulnerability with the Opus encoder when the number of channels in an audio stream changes while the encoder is in use. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Vulnerabilidad de lectura fuera de límites en el codificador Opus cuando el número de canales en una transmisión de audio cambia mientras el codificador sigue en uso. La vulnerabilidad afecta a Firefox en versiones anteriores a la 54, Firefox ESR en versiones anteriores a la 52.2 y Th... • http://www.securityfocus.com/bid/99057 • CWE-125: Out-of-bounds Read •

CVSS: 5.3EPSS: 0%CPEs: 5EXPL: 1

14 Jun 2017 — Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows characters from "Aspirational Use Scripts" such as Canadian Syllabics to be mixed with Latin characters in the "moderately restrictive" IDN profile. We have changed Firefox behavior to match the upcoming Unicode version 1... • http://www.securityfocus.com/bid/99057 • CWE-20: Improper Input Validation •

CVSS: 9.8EPSS: 0%CPEs: 18EXPL: 1

14 Jun 2017 — A use-after-free vulnerability during video control operations when a "" element holds a reference to an older window if that window has been replaced in the DOM. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Vulnerabilidad de uso de memoria previamente liberada durante las operaciones de control de vídeo cuando un elemento "" mantiene una referencia a una ventana más antigua si esa ventana ha sido reemplazada en ... • http://www.securityfocus.com/bid/99057 • CWE-416: Use After Free •

CVSS: 7.5EPSS: 0%CPEs: 18EXPL: 1

14 Jun 2017 — An out-of-bounds read in WebGL with a maliciously crafted "ImageInfo" object during WebGL operations. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Lectura fuera de límites en WebGL con un objeto "ImageInfo" maliciosamente manipulado durante las operaciones WebGL. La vulnerabilidad afecta a Firefox en versiones anteriores a la 54, Firefox ESR en versiones anteriores a la 52.2 y Thunderbird en versiones anteriores a la 52.2. Multiple security issues were discovered in F... • http://www.securityfocus.com/bid/99057 • CWE-125: Out-of-bounds Read •

CVSS: 9.8EPSS: 0%CPEs: 18EXPL: 0

14 Jun 2017 — Memory safety bugs were reported in Firefox 53 and Firefox ESR 52.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Se han reportado errores de seguridad de memoria en Firefox 53 y Firefox ESR 52.1. Algunos de estos errores mostraron evidencias de corrupción de memoria y se entiende que, con el suficiente esfuerzo, a... • http://www.securityfocus.com/bid/99041 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •