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CVSS: 10.0EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — Memory safety bugs were reported in Firefox 59. 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 < 60. Se ha informado sobre errores de seguridad de memoria en Firefox 59. Algunos de estos errores mostraron evidencias de corrupción de memoria y se cree que, con el esfuerzo necesario, se podrían explotar para ejecutar código arbitrario. • http://www.securityfocus.com/bid/104139 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.1EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — The JSON Viewer displays clickable hyperlinks for strings that are parseable as URLs, including "javascript:" links. If a JSON file contains malicious JavaScript script embedded as "javascript:" links, users may be tricked into clicking and running this code in the context of the JSON Viewer. This can allow for the theft of cookies and authorization tokens which are accessible to that context. This vulnerability affects Firefox < 60. JSON Viewer muestra hipervínculos que se pueden hacer clic en ellos para c... • http://www.securityfocus.com/bid/104139 • CWE-20: Improper Input Validation •

CVSS: 6.1EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — A mechanism to bypass Content Security Policy (CSP) protections on sites that have a "script-src" policy of "'strict-dynamic'". If a target website contains an HTML injection flaw an attacker could inject a reference to a copy of the "require.js" library that is part of Firefox's Developer Tools, and then use a known technique using that library to bypass the CSP restrictions on executing injected scripts. This vulnerability affects Firefox < 60. Un mecanismo para omitir las protecciones de la Política de S... • http://www.securityfocus.com/bid/104139 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 1

12 May 2018 — If a URL using the "file:" protocol is dragged and dropped onto an open tab that is running in a different child process the tab will open a local file corresponding to the dropped URL, contrary to policy. One way to make the target tab open more reliably in a separate process is to open it with the "noopener" keyword. This vulnerability affects Firefox < 60. Si una URL que utiliza el protocolo "file:" es arrastrada y soltada en una pestaña abierta que se está ejecutando en un proceso hijo diferente, la pes... • http://www.securityfocus.com/bid/104139 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 4.3EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — The web console and JavaScript debugger do not sanitize all output that can be hyperlinked. Both will display "chrome:" links as active, clickable hyperlinks in their output. Web sites should not be able to directly link to internal chrome pages. Additionally, the JavaScript debugger will display "javascript:" links, which users could be tricked into clicking by malicious sites. This vulnerability affects Firefox < 60. • http://www.securityfocus.com/bid/104139 • CWE-20: Improper Input Validation •

CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — If manipulated hyperlinked text with "chrome:" URL contained in it is dragged and dropped on the "home" icon, the home page can be reset to include a normally-unlinkable chrome page as one of the home page tabs. This vulnerability affects Firefox < 60. Si se manipula el texto hipervinculado que contiene una URL "chrome:" y se arrastra y suelta en el icono "home", la página de inicio se puede restablecer para incluir una página chrome que normalmente no es enlazable como una de las pestañas de la página de i... • http://www.securityfocus.com/bid/104139 • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — WebRTC can use a "WrappedI420Buffer" pixel buffer but the owning image object can be freed while it is still in use. This can result in the WebRTC encoder using uninitialized memory, leading to a potentially exploitable crash. This vulnerability affects Firefox < 60. WebRTC puede utilizar un búfer de píxeles "WrappedI420Buffer", pero el objeto owning image puede liberarse mientras está en uso. Esto puede provocar que el codificador WebRTC utilice memoria no inicializada, lo que puede provocar un cierre ines... • http://www.securityfocus.com/bid/104139 • CWE-416: Use After Free CWE-908: Use of Uninitialized Resource •

CVSS: 7.5EPSS: 1%CPEs: 5EXPL: 0

12 May 2018 — A vulnerability exists in XSLT during number formatting where a negative buffer size may be allocated in some instances, leading to a buffer overflow and crash if it occurs. This vulnerability affects Firefox < 60. Existe una vulnerabilidad en XSLT durante el formateo de números en la que se puede asignar un tamaño de búfer negativo en algunos casos, lo que provoca un desbordamiento de búfer y un cierre inesperado si ocurre. Esta vulnerabilidad afecta a las versiones anteriores a la 60 de Firefox. USN-3645-... • http://www.securityfocus.com/bid/104139 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — WebExtensions can use request redirection and a "filterReponseData" filter to bypass host permission settings to redirect network traffic and access content from a host for which they do not have explicit user permission. This vulnerability affects Firefox < 60. WebExtensions puede utilizar la redirección de peticiones y un filtro "filterReponseData" para eludir la configuración de permisos del host para redirigir el tráfico de red y acceder al contenido de un host para el que no tienen permiso explícito de... • http://www.securityfocus.com/bid/104139 • CWE-269: Improper Privilege Management •

CVSS: 6.5EPSS: 0%CPEs: 5EXPL: 0

12 May 2018 — WebExtensions with the appropriate permissions can attach content scripts to Mozilla sites such as accounts.firefox.com and listen to network traffic to the site through the "webRequest" API. For example, this allows for the interception of username and an encrypted password during login to Firefox Accounts. This issue does not expose synchronization traffic directly and is limited to the process of user login to the website and the data displayed to the user once logged in. This vulnerability affects Firef... • http://www.securityfocus.com/bid/104139 • CWE-327: Use of a Broken or Risky Cryptographic Algorithm •