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CVSS: 9.8EPSS: 0%CPEs: 2EXPL: 0

Weak proxy objects have weak references on multiple threads when they should only have them on one, resulting in incorrect memory usage and corruption, which leads to potentially exploitable crashes. Note: This issue only affects Firefox for Android. Other operating systems are not affected. This vulnerability affects Firefox < 51. Los objetos proxy débiles tienen referencias débiles en múltiples hilos cuando solo deberían tenerlas en uno, lo que resulta en un uso incorrecto y una corrupción de la memoria, lo que conduce a potenciales cierres inesperados. • http://www.securityfocus.com/bid/95763 http://www.securitytracker.com/id/1037693 https://bugzilla.mozilla.org/show_bug.cgi?id=1293709 https://www.mozilla.org/security/advisories/mfsa2017-01 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 5.3EPSS: 0%CPEs: 4EXPL: 0

The reader view will display cross-origin content when CORS headers are set to prohibit the loading of cross-origin content by a site. This could allow access to content that should be restricted in reader view. This vulnerability affects Firefox < 58. La vista del lector mostrará el contenido de orígenes cruzados cuando las cabeceras CORS estén configurados para prohibir la carga de contenido de orígenes cruzados por un sitio. Esto podría permitir el acceso a contenidos que deberían ser restringidos en la vista del lector. • http://www.securityfocus.com/bid/102786 http://www.securitytracker.com/id/1040270 https://bugzilla.mozilla.org/show_bug.cgi?id=1420507 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: 2EXPL: 1

Malicious sites can display a spoofed location bar on a subsequently loaded page when the existing location bar on the new page is scrolled out of view if navigations between pages can be timed correctly. Note: This issue only affects Firefox for Android. Other operating systems are not affected. This vulnerability affects Firefox < 51. Los sitios maliciosos pueden mostrar una barra de direcciones suplantada en una página subsecuentemente cargada cuando la barra de direcciones existente en la nueva página se deja de ver al desplazarse si la navegación entre páginas se puede sincronizar correctamente. • http://www.securityfocus.com/bid/95763 http://www.securitytracker.com/id/1037693 https://bugzilla.mozilla.org/show_bug.cgi?id=1293463 https://www.mozilla.org/security/advisories/mfsa2017-01 • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 1

A use-after-free can occur during buffer storage operations within the ANGLE graphics library, used for WebGL content. The buffer storage can be freed while still in use in some circumstances, leading to a potentially exploitable crash. Note: This issue is in "libGLES", which is only in use on Windows. Other operating systems are not affected. This vulnerability affects Firefox < 52 and Thunderbird < 52. • http://www.securityfocus.com/bid/96692 http://www.securitytracker.com/id/1037966 https://bugzilla.mozilla.org/show_bug.cgi?id=1325511 https://www.mozilla.org/security/advisories/mfsa2017-05 https://www.mozilla.org/security/advisories/mfsa2017-09 • CWE-416: Use After Free •

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

The destructor function for the "WindowsDllDetourPatcher" class can be re-purposed by malicious code in concert with another vulnerability to write arbitrary data to an attacker controlled location in memory. This can be used to bypass existing memory protections in this situation. Note: This attack only affects Windows operating systems. Other operating systems are not affected. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55. • http://www.securityfocus.com/bid/100234 http://www.securitytracker.com/id/1039124 https://bugzilla.mozilla.org/show_bug.cgi?id=1372849 https://www.mozilla.org/security/advisories/mfsa2017-18 https://www.mozilla.org/security/advisories/mfsa2017-19 https://www.mozilla.org/security/advisories/mfsa2017-20 • CWE-20: Improper Input Validation •