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

03 Oct 2017 — A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types. This can be triggered without specific user interaction for the file download and open actions. This could be used to trigger known vulnerabilities in the programs that handle those document types. This vulnerability affects Firefox < 56. Una vulnerabilidad en el que WebExtensions puede descargar e intentar abrir un archivo de tipos que no sean ejecutables. • http://www.securityfocus.com/bid/101057 • CWE-732: Incorrect Permission Assignment for Critical Resource •

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

03 Oct 2017 — If web content on a page is dragged onto portions of the browser UI, such as the tab bar, links can be opened that otherwise would not be allowed to open. This can allow malicious web content to open a locally stored file through "file:" URLs. This vulnerability affects Firefox < 56. Si el contenido web en una página se arrastra a porciones de la interfaz de usuario del navegador como una barra de pestañas, los enlaces se pueden abrir, algo que de otra manera no se podrían abrir. Esto puede permitir que un ... • http://www.securityfocus.com/bid/101057 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 6.1EPSS: 0%CPEs: 15EXPL: 1

29 Sep 2017 — The content security policy (CSP) "sandbox" directive did not create a unique origin for the document, causing it to behave as if the "allow-same-origin" keyword were always specified. This could allow a Cross-Site Scripting (XSS) attack to be launched from unsafe content. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4. La directiva CSP (Content Security Policy) "sandbox" no creaba un origen único para el documento, provocando que se comporte como si estuviera siempre es... • http://www.securityfocus.com/bid/101059 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 9.8EPSS: 0%CPEs: 23EXPL: 0

29 Sep 2017 — A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4. Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada en la API Fetch cuando el trabajador o la ventana asociada se liberan mientras siguen en uso, lo que resulta en un cierre inesperado potencialmente explotable. La vulnerabilidad afe... • http://www.securityfocus.com/bid/101055 • CWE-416: Use After Free •

CVSS: 7.8EPSS: 0%CPEs: 15EXPL: 0

29 Sep 2017 — File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4. Las descargas de archivos codificados con elementos URL "blob:" y "data:" omitían las comprobaciones de... • http://www.securityfocus.com/bid/101059 • CWE-20: Improper Input Validation CWE-494: Download of Code Without Integrity Check •

CVSS: 9.8EPSS: 0%CPEs: 16EXPL: 1

29 Sep 2017 — A use-after-free vulnerability can occur when manipulating arrays of Accessible Rich Internet Applications (ARIA) elements within containers through the DOM. This results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4. Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada cuando se manipulan arrays de elementos ARIA (Accesible Rich Internet Applications) en los contenedores mediante el DOM. Esto resulta en un cierre i... • http://www.securityfocus.com/bid/101055 • CWE-416: Use After Free •

CVSS: 9.8EPSS: 0%CPEs: 14EXPL: 1

29 Sep 2017 — A use-after-free vulnerability can occur in design mode when image objects are resized if objects referenced during the resizing have been freed from memory. This results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4. Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada cuando los objetos imagen se redimensionan si los objetos referenciados durante el redimensionamiento se han liberado de la memoria. Esto resulta en... • http://www.securityfocus.com/bid/101055 • CWE-416: Use After Free •

CVSS: 9.8EPSS: 0%CPEs: 15EXPL: 0

29 Sep 2017 — A buffer overflow occurs when drawing and validating elements with the ANGLE graphics library, used for WebGL content. This is due to an incorrect value being passed within the library during checks and results in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4. Ocurre un desbordamiento de búfer cuando se dibujan y validan elementos con la librería de gráficos ANGLE, utilizado para contenidos WebGL. Esto se debe a que se pasa un valor inco... • http://www.securityfocus.com/bid/101053 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •

CVSS: 10.0EPSS: 0%CPEs: 17EXPL: 0

29 Sep 2017 — Memory safety bugs were reported in Firefox 55 and Firefox ESR 52.3. 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 < 56, Firefox ESR < 52.4, and Thunderbird < 52.4. Se han informado de errores de seguridad de memoria en Firefox 55 y Firefox ESR 52.3. Algunos de estos errores mostraron evidencias de corrupción de memoria y se cree que, con el esfuerzo necesario, se ... • http://www.securityfocus.com/bid/101054 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-122: Heap-based Buffer Overflow •

CVSS: 9.8EPSS: 3%CPEs: 1EXPL: 0

18 Aug 2017 — Remote code execution in the Venkman script debugger in Mozilla Firefox before 2.0.0.8. Existe una vulnerabilidad de ejecución remota de código en el script debugger Venkman en Mozilla Firefox en versiones anteriores a la 2.0.0.8. • https://bugzilla.mozilla.org/show_bug.cgi?id=325761 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •