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CVSS: 5.8EPSS: 0%CPEs: 4EXPL: 0

23 Oct 2019 — By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Mediante el uso de un formulario con un URI de datos, fue posible conseguir acceso al objeto JSONView privilegiado que había sido clonado en contenido. El impacto de exponer ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1561502 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-749: Exposed Dangerous Method or Function CWE-862: Missing Authorization •

CVSS: 6.1EPSS: 0%CPEs: 4EXPL: 0

23 Oct 2019 — If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Si dos documentos del mismo origen configuran a document.domain de manera diferente para convertirse en origen cruzado, es posible llamar arbitrariamente a DOM methods/getters/setters en la ventana ahora de origen cruzado. Esta vulnerabili... • https://bugzilla.mozilla.org/show_bug.cgi?id=1582857 • CWE-346: Origin Validation Error CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

CVSS: 6.1EPSS: 1%CPEs: 4EXPL: 0

23 Oct 2019 — Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Si no se ma... • https://bugzilla.mozilla.org/show_bug.cgi?id=1584216 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 1

23 Oct 2019 — Mozilla developers and community members reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2. Los desarrolladores de Mozilla y los miembros de la comunidad reportaron bugs de seguridad de memoria presentes en Firefox versión 69 y Firefox ESR versión 68.1. A... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1558522%2C1577061%2C1548044%2C1571223%2C1573048%2C1578933%2C1575217%2C1583684%2C1586845%2C1581950%2C1583463%2C1586599 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVSS: 7.0EPSS: 0%CPEs: 3EXPL: 0

27 Sep 2019 — The Mozilla Maintenance Service does not guard against files being hardlinked to another file in the updates directory, allowing for the replacement of local files, including the Maintenance Service executable, which is run with privileged access. Additionally, there was a race condition during checks for junctions and symbolic links by the Maintenance Service, allowing for potential local file and directory manipulation to be undetected in some circumstances. This allows for potential privilege escalation ... • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0

27 Sep 2019 — Logging-related command line parameters are not properly sanitized when Firefox is launched by another program, such as when a user clicks on malicious links in a chat application. This can be used to write a log file to an arbitrary location such as the Windows 'Startup' folder.
*Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1. Los parámetros de línea de comando relacionados con el Inicio de Sesión no son saneados apro... • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html • CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') •

CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0

27 Sep 2019 — The Firefox installer allows Firefox to be installed to a custom user writable location, leaving it unprotected from manipulation by unprivileged users or malware. If the Mozilla Maintenance Service is manipulated to update this unprotected location and the updated maintenance service in the unprotected location has been altered, the altered maintenance service can run with elevated privileges during the update process due to a lack of integrity checks. This allows for privilege escalation if the executable... • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html • CWE-354: Improper Validation of Integrity Check Value •

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

04 Sep 2019 — A same-origin policy violation occurs allowing the theft of cross-origin images through a combination of SVG filters and a <canvas> element due to an error in how same-origin policy is applied to cached image content. The resulting same-origin policy violation could allow for data theft. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1. Se presenta una violación de la política del mismo origen, que permite el robo de imágenes d... • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html • CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

CVSS: 4.3EPSS: 1%CPEs: 5EXPL: 1

04 Sep 2019 — Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1. Los eventos de navegación no se adhirieron totalmente a la... • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html • CWE-203: Observable Discrepancy CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

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

04 Sep 2019 — Some HTML elements, such as <title> and <textarea>, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, a... • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •