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

`EncryptingOutputStream` was susceptible to exposing uninitialized data. This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode. This vulnerability affects Firefox ESR < 115.6 and Firefox < 121. `EncryptingOutputStream` era susceptible de exponer datos no inicializados. Sólo se puede abusar de este problema para escribir datos en un disco local, lo que puede tener implicaciones para el modo de navegación privada. • https://bugzilla.mozilla.org/show_bug.cgi?id=1864123 https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html https://security.gentoo.org/glsa/202401-10 https://www.debian.org/security/2023/dsa-5581 https://www.mozilla.org/security/advisories/mfsa2023-54 https://www.mozilla.org/security/advisories/mfsa2023-56 https://access.redhat.com/security/cve/CVE-2023-6865 https://bugzilla.redhat.com/show_bug.cgi?id=2255361 • CWE-908: Use of Uninitialized Resource •

CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0

Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121. Errores de seguridad de la memoria presentes en Firefox 120, Firefox ESR 115.5 y Thunderbird 115.5. Algunos de estos errores mostraron evidencia de corrupción de memoria y suponemos que con suficiente esfuerzo algunos de ellos podrían haberse aprovechado para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1736385%2C1810805%2C1846328%2C1856090%2C1858033%2C1858509%2C1862089%2C1862777%2C1864015 https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html https://security.gentoo.org/glsa/202401-10 https://www.debian.org/security/2023/dsa-5581 https://www.debian.org/security/2023/dsa-5582 https://www.mozilla.org/security/advisories/mfsa2023-54 https://www.mozilla.org/security/advi • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0

The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121. El `ShutdownObserver()` era susceptible a un comportamiento potencialmente indefinido debido a su dependencia de un tipo dinámico que carecía de un destructor virtual. Esta vulnerabilidad afecta a Firefox ESR &lt;115.6, Thunderbird &lt;115.6 y Firefox &lt;121. The Mozilla Foundation Security Advisory describes this flaw as: The `ShutdownObserver()` was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor. • https://bugzilla.mozilla.org/show_bug.cgi?id=1868901 https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html https://security.gentoo.org/glsa/202401-10 https://www.debian.org/security/2023/dsa-5581 https://www.mozilla.org/security/advisories/mfsa2023-54 https://www.mozilla.org/security/advisories/mfsa2023-55 https://www.mozilla.org/security/advisories/mfsa2023-56 https://access.redhat.com/security/cve/CVE-2023-6863 https://bugzilla.redhat.com/show_bug.cgi?id=2255369 • CWE-20: Improper Input Validation •

CVSS: 8.8EPSS: 0%CPEs: 5EXPL: 0

A use-after-free was identified in the `nsDNSService::Init`. This issue appears to manifest rarely during start-up. This vulnerability affects Firefox ESR < 115.6 and Thunderbird < 115.6. Se identificó un use after free en `nsDNSService::Init`. Este problema parece manifestarse raramente durante el inicio. • https://bugzilla.mozilla.org/show_bug.cgi?id=1868042 https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html https://security.gentoo.org/glsa/202401-10 https://www.debian.org/security/2023/dsa-5581 https://www.debian.org/security/2023/dsa-5582 https://www.mozilla.org/security/advisories/mfsa2023-54 https://www.mozilla.org/security/advisories/mfsa2023-55 https://access.redhat.com/security/cve/CVE- • CWE-416: Use After Free •

CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 0

The `nsWindow::PickerOpen(void)` method was susceptible to a heap buffer overflow when running in headless mode. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121. El método `nsWindow::PickerOpen(void)` era susceptible a un desbordamiento de búfer de almacenamiento dinámico cuando se ejecutaba en modo headless. Esta vulnerabilidad afecta a Firefox ESR &lt;115.6, Thunderbird &lt;115.6 y Firefox &lt;121. The Mozilla Foundation Security Advisory describes this flaw as: The `nsWindow::PickerOpen(void)` method was susceptible to a heap buffer overflow when running in headless mode. • https://bugzilla.mozilla.org/show_bug.cgi?id=1864118 https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html https://security.gentoo.org/glsa/202401-10 https://www.debian.org/security/2023/dsa-5581 https://www.debian.org/security/2023/dsa-5582 https://www.mozilla.org/security/advisories/mfsa2023-54 https://www.mozilla.org/security/advisories/mfsa2023-55 https://www.mozilla.org/security/advisories/mf • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •