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CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0

27 Sep 2023 — In a non-standard configuration of Firefox, an integer overflow could have occurred based on network traffic (possibly under influence of a local unprivileged webpage), leading to an out-of-bounds write to privileged process memory. *This bug only affects Firefox if a non-standard preference allowing non-HTTPS Alternate Services (`network.http.altsvc.oe`) is enabled.* This vulnerability affects Firefox < 118. En una configuración no estándar de Firefox, podría haberse producido un desbordamiento de enteros ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1823172 • CWE-190: Integer Overflow or Wraparound •

CVSS: 10.0EPSS: 0%CPEs: 1EXPL: 0

27 Sep 2023 — A hashtable in the Ion Engine could have been mutated while there was a live interior reference, leading to a potential use-after-free and exploitable crash. This vulnerability affects Firefox < 118. Una tabla hash en Ion Engine podría haber sido mutada mientras había una referencia interior activa, lo que llevó a un posible bloqueo explotable y de use-after-free. Esta vulnerabilidad afecta a Firefox < 118. Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could lead to remo... • https://bugzilla.mozilla.org/show_bug.cgi?id=1852218 • CWE-416: Use After Free •

CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0

27 Sep 2023 — In canvas rendering, a compromised content process could have caused a surface to change unexpectedly, leading to a memory leak of a privileged process. This memory leak could be used to effect a sandbox escape if the correct data was leaked. This vulnerability affects Firefox < 118. En la representación del lienzo, un proceso de contenido comprometido podría haber provocado que una superficie cambiara inesperadamente, lo que habría provocado una pérdida de memoria de un proceso privilegiado. Esta pérdida d... • https://bugzilla.mozilla.org/show_bug.cgi?id=1846686 • CWE-401: Missing Release of Memory after Effective Lifetime •

CVSS: 10.0EPSS: 0%CPEs: 6EXPL: 0

27 Sep 2023 — Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. 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 < 118, Firefox ESR < 115.3, and Thunderbird < 115.3. Errores de seguridad de la memoria presentes en Firefox 117, Firefox ESR 115.2 y Thunderbird 115.2. Algunos de estos errores mostraron evidencia de corrupción de memoria y suponemos... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1836353%2C1842674%2C1843824%2C1843962%2C1848890%2C1850180%2C1850983%2C1851195 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

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

27 Sep 2023 — If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This bug only affects Firefox on Windows when run in non-standard configurations (such as using `runas`). Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3. Si Windows no pudo duplicar un identificador durante la creación del proceso, es ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1848454 • CWE-416: Use After Free •

CVSS: 7.8EPSS: 1%CPEs: 7EXPL: 0

27 Sep 2023 — During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3. Durante la compilación de Ion, una Recolección de Basura podría haber resultado en una condición de use-after-free, lo que permitiría a un atacante escribir dos bytes NUL y provocar un bloqueo potencialmente explotable. Esta vulnerabilidad ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1851599 • CWE-416: Use After Free •

CVSS: 7.8EPSS: 0%CPEs: 7EXPL: 0

27 Sep 2023 — A compromised content process could have provided malicious data in a `PathRecording` resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3. Un proceso de contenido comprometido podría haber proporcionado datos maliciosos en un `PathRecording`, lo que habría resultado en una escritura fuera de los límites, lo que habría provocado una falla potencialmente explotable en un ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1846685 • CWE-787: Out-of-bounds Write •

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

27 Sep 2023 — A compromised content process could have provided malicious data to `FilterNodeD2D1` resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3. Un proceso de contenido comprometido podría haber proporcionado datos maliciosos a `FilterNodeD2D1`, lo que habría resultado en una escritura fuera de... • https://bugzilla.mozilla.org/show_bug.cgi?id=1846683 • CWE-787: Out-of-bounds Write •

CVSS: 10.0EPSS: 46%CPEs: 16EXPL: 16

12 Sep 2023 — Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical) El desbordamiento del búfer de memoria en libwebp en Google Chrome anterior a 116.0.5845.187 y libwebp 1.3.2 permitía a un atacante remoto realizar una escritura en memoria fuera de los límites a través de una página HTML manipulada. (Severidad de seguridad de Chromium: crítica) A heap-bas... • https://github.com/alsaeroth/CVE-2023-4863-POC • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •

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

11 Sep 2023 — Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occured when allocating too much private shader memory on mac OS. *This bug only affects Firefox on macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2. Debido a que las grandes comprobaciones de asignación en Angle para que los sombreadores glsl sean demasiado indulgentes, se podría haber producido un desbordamiento del bú... • https://bugzilla.mozilla.org/show_bug.cgi?id=1773874 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •