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CVSS: 10.0EPSS: 0%CPEs: 4EXPL: 0

Memory safety bugs were reported in Firefox 57. 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 < 58. Se han informado de errores de seguridad de memoria en Firefox 57. 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/102786 http://www.securitytracker.com/id/1040270 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1413857%2C1412653%2C1418966%2C1427126%2C1412942%2C1401459%2C1364399%2C1382851%2C1423770%2C1401420%2C1281965%2C1389561%2C1409179%2C1416879%2C1421786%2C1426449%2C1416799%2C1400912%2C1415158%2C1415748%2C1415788%2C1371891%2C1415770%2C1416519%2C1413143%2C1418841%2C1384544%2C1410140%2C1411631%2C1412313%2C1412641%2C1412645%2C1412646%2C1412648%2C1261175 https://usn.ubuntu.com/3544-1 https://www.mozilla.org/security/advisories/mfsa2018-02 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0

If an HTTP authentication prompt is triggered by a background network request from a page or extension, it is displayed over the currently loaded foreground page. Although the prompt contains the real domain making the request, this can result in user confusion about the originating site of the authentication request and may cause users to mistakenly send private credential information to a third party site. This vulnerability affects Firefox < 58. Si una petición de autenticación HTTP es activada por una petición de red en segundo plano desde una página o extensión, se muestra sobre la página en primer plano cargada actualmente. Aunque el menaje contiene el dominio real que realiza la petición, esto puede provocar confusión en el usuario sobre el sitio de origen de la petición de autenticación y puede hacer que los usuarios envíen erróneamente información de credenciales privadas a un sitio externo. • http://www.securityfocus.com/bid/102786 http://www.securitytracker.com/id/1040270 https://bugzilla.mozilla.org/show_bug.cgi?id=1409449 https://usn.ubuntu.com/3544-1 https://www.mozilla.org/security/advisories/mfsa2018-02 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 4.3EPSS: 0%CPEs: 4EXPL: 0

A Blob URL can violate origin attribute segregation, allowing it to be accessed from a private browsing tab and for data to be passed between the private browsing tab and a normal tab. This could allow for the leaking of private information specific to the private browsing context. This issue is mitigated by the requirement that the user enter the Blob URL manually in order for the access violation to occur. This vulnerability affects Firefox < 58. Una URL Blob puede violar la segregación del atributo origin, permitiendo que se acceda desde una pestaña de navegación privada y que se pasen los datos entre la pestaña de navegación privada y una pestaña normal. • http://www.securityfocus.com/bid/102786 http://www.securitytracker.com/id/1040270 https://bugzilla.mozilla.org/show_bug.cgi?id=1421099 https://usn.ubuntu.com/3544-1 https://www.mozilla.org/security/advisories/mfsa2018-02 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0

A use-after-free vulnerability can occur when arguments passed to the "IsPotentiallyScrollable" function are freed while still in use by scripts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 58. Puede ocurrir una vulnerabilidad de uso de memoria previamente liberada cuando los argumentos pasados a la función "IsPotentiallyScrollable" se liberan cuando todavía hay scripts que los están utilizando. Esto resulta en un cierre inesperado explotable. • http://www.securityfocus.com/bid/102786 http://www.securitytracker.com/id/1040270 https://bugzilla.mozilla.org/show_bug.cgi?id=1417405 https://usn.ubuntu.com/3544-1 https://www.mozilla.org/security/advisories/mfsa2018-02 • CWE-416: Use After Free •

CVSS: 7.5EPSS: 3%CPEs: 4EXPL: 0

A heap buffer overflow vulnerability may occur in WebAssembly when "shrinkElements" is called followed by garbage collection on memory that is now uninitialized. This results in a potentially exploitable crash. This vulnerability affects Firefox < 58. Podría ocurrir un desbordamiento de búfer basado en memoria dinámica (heap) en WebAssembly cuando se llama a "shrinkElements" seguido de la recolección de basura (garbage collection) en la memoria que ahora está sin inicializar. Esto resulta en un cierre inesperado explotable. • http://www.securityfocus.com/bid/102786 http://www.securitytracker.com/id/1040270 https://bugzilla.mozilla.org/show_bug.cgi?id=1415883 https://usn.ubuntu.com/3544-1 https://www.mozilla.org/security/advisories/mfsa2018-02 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •