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CVSS: 9.8EPSS: 3%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: 5.3EPSS: 1%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: 3%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 •

CVSS: 9.8EPSS: 3%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: 8.8EPSS: 0%CPEs: 18EXPL: 0

14 Jun 2017 — A use-after-free vulnerability during specific user interactions with the input method editor (IME) in some languages due to how events are handled. This results in a potentially exploitable crash but would require specific user interaction to trigger. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2. Vulnerabilidad de uso de memoria previamente liberada durante interacciones de usuario específicas con el IME (input method editor) en algunos lenguajes debido a la forma en ... • http://www.securityfocus.com/bid/99057 • CWE-416: Use After Free •

CVSS: 7.5EPSS: 1%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: 9.1EPSS: 3%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: 9.8EPSS: 1%CPEs: 6EXPL: 0

21 Apr 2017 — Memory safety bugs were reported in Firefox 52, Firefox ESR 52, and Thunderbird 52. 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 Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53. Se han reportado errores de seguridad de memoria en Firefox 52, Firefox ESR 52, y Thunderbird 52. Algunos de estos errores mostraron evidencias de corrupción de memoria y se entiende que,... • http://www.securityfocus.com/bid/97940 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.8EPSS: 2%CPEs: 11EXPL: 1

21 Apr 2017 — A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message. This allows for read and write access to the local file system. This vulnerability affects Firefox ESR < 52.1 and Firefox < 53. Mecanismo para omitir las protecciones de acceso al sistema de archivos en el sandbox mediante el constructor de peticiones al sistema de archivos mediante un mensaje IPC. Esto permite acceso de lectura y escritura al sistema de archivos local. • http://www.securityfocus.com/bid/97940 • CWE-732: Incorrect Permission Assignment for Critical Resource •

CVSS: 6.1EPSS: 0%CPEs: 16EXPL: 1

21 Apr 2017 — If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting (XSS) attack. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53. Si se carga una página desde un sitio original mediante un hipervínculo y contiene una redirección a una URL "data:text/html", desencadenar una recarga ejecutará la... • http://www.securityfocus.com/bid/97940 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •