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CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 1

Stack-based buffer overflow in the evutil_parse_sockaddr_port function in evutil.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (segmentation fault) via vectors involving a long string in brackets in the ip_as_string argument. Desbordamiento de búfer en la función evutil_parse_sockaddr_port en evutil.c en libevent en versiones anteriores a 2.1.6-beta permite a atacantes provocar una denegación de servicio (fallo de segmentación) a través de vectores que implican una cadena larga entre corchetes en el argumento ip_as_string. A vulnerability was found in libevent with the parsing of IPv6 addresses. If an attacker could cause an application using libevent to parse a malformed address in IPv6 notation of more than 2GiB in length, a stack overflow would occur leading to a crash. • http://www.debian.org/security/2017/dsa-3789 http://www.openwall.com/lists/oss-security/2017/01/31/17 http://www.openwall.com/lists/oss-security/2017/02/02/7 http://www.securityfocus.com/bid/96014 http://www.securitytracker.com/id/1038320 https://access.redhat.com/errata/RHSA-2017:1104 https://access.redhat.com/errata/RHSA-2017:1106 https://access.redhat.com/errata/RHSA-2017:1201 https://bugzilla.mozilla.org/show_bug.cgi?id=1343453 https://github.com/libeve • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0

The file picker dialog can choose and display the wrong local default directory when instantiated. On some operating systems, this can lead to information disclosure, such as the operating system or the local account name. This vulnerability affects Firefox < 52 and Thunderbird < 52. El diálogo file picker puede elegir y mostrar el directorio local por defecto equivocado cuando se instancia. En algunos sistemas operativos, esto puede conducir a una divulgación de información, como el sistema operativo o el nombre de la cuenta local. • http://www.securityfocus.com/bid/96692 http://www.securitytracker.com/id/1037966 https://bugzilla.mozilla.org/show_bug.cgi?id=1319370 https://www.mozilla.org/security/advisories/mfsa2017-05 https://www.mozilla.org/security/advisories/mfsa2017-09 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 9.8EPSS: 0%CPEs: 21EXPL: 0

A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8. Puede ocurrir un uso de memoria previamente liberada cuando se lanzan eventos para un objeto "FontFace" una vez el objeto ha sido ya destruido mientras se trabaja con fuentes. Esto resulta en un cierre inesperado potencialmente explotable. • http://rhn.redhat.com/errata/RHSA-2017-0459.html http://rhn.redhat.com/errata/RHSA-2017-0461.html http://rhn.redhat.com/errata/RHSA-2017-0498.html http://www.securityfocus.com/bid/96664 http://www.securitytracker.com/id/1037966 https://bugzilla.mozilla.org/show_bug.cgi?id=1334876 https://security.gentoo.org/glsa/201705-06 https://security.gentoo.org/glsa/201705-07 https://www.debian.org/security/2017/dsa-3805 https://www.debian.org/security/2017/dsa-3832 https • CWE-416: Use After Free •

CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 1

A segmentation fault can occur in the Skia graphics library during some canvas operations due to issues with mask/clip intersection and empty masks. This vulnerability affects Firefox < 52 and Thunderbird < 52. Puede ocurrir un fallo de segmentación en la biblioteca de gráficos Skia durante algunas operaciones canvas debido a problemas con la intersección de máscaras/clips y las máscaras vacías. La vulnerabilidad afecta a Firefox en versiones anteriores a la 52 y Thunderbird en versiones anteriores a la 52. • http://www.securityfocus.com/bid/96692 http://www.securitytracker.com/id/1037966 https://bugzilla.mozilla.org/show_bug.cgi?id=1306890 https://www.mozilla.org/security/advisories/mfsa2017-05 https://www.mozilla.org/security/advisories/mfsa2017-09 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.5EPSS: 0%CPEs: 22EXPL: 1

Using SVG filters that don't use the fixed point math implementation on a target iframe, a malicious page can extract pixel values from a targeted user. This can be used to extract history information and read text values across domains. This violates same-origin policy and leads to information disclosure. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8. Mediante el uso de filtros SVG que no emplean la implementación de matemática de punto fijo en un iframe objetivo, una página maliciosa puede extraer valores de píxeles de un usuario objetivo. • http://rhn.redhat.com/errata/RHSA-2017-0459.html http://rhn.redhat.com/errata/RHSA-2017-0461.html http://rhn.redhat.com/errata/RHSA-2017-0498.html http://www.securityfocus.com/bid/96693 http://www.securitytracker.com/id/1037966 https://bugzilla.mozilla.org/show_bug.cgi?id=1336622 https://security.gentoo.org/glsa/201705-06 https://security.gentoo.org/glsa/201705-07 https://www.debian.org/security/2017/dsa-3805 https://www.debian.org/security/2017/dsa-3832 https • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •