CVSS: 10.0EPSS: 0%CPEs: 7EXPL: 0CVE-2020-12395 – Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8
https://notcve.org/view.php?id=CVE-2020-12395
Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. 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 < 68.8, Firefox < 76, and Thunderbird < 68.8.0. Los desarrolladores de Mozilla y los miembros de la comunidad informaron bugs de seguridad de la memoria presentes en Firefox versión 75 y Firefox ESR versión 68.7. Algunos de estos errores mostraron evidencia de corrupción de memoria y suponemos que con suficiente esfuerzo algunos de estos podrían haber sido explotados para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508 https://security.gentoo.org/glsa/202005-03 https://security.gentoo.org/glsa/202005-04 https://usn.ubuntu.com/4373-1 https://www.mozilla.org/security/advisories/mfsa2020-16 https://www.mozilla.org/security/advisories/mfsa2020-17 https://www.mozilla.org/security/advisories/mfsa2020-18 https://access.redhat.com/security/cve/CVE-2020-12395 https://bugzilla.redhat.com/show • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-6826
https://notcve.org/view.php?id=CVE-2020-6826
Mozilla developers Tyson Smith, Bob Clary, and Alexandru Michis reported memory safety bugs present in Firefox 74. 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 < 75. Los desarrolladores de Mozilla, Tyson Smith, Bob Clary y Alexandru Michis reportaron bugs de seguridad de la memoria presentes en Firefox versión 74. Algunos de estos bugs mostraron evidencia de corrupción de memoria y presumimos que con suficiente esfuerzo algunos de estos podrían haber sido explotados para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1613009%2C1613195%2C1616734%2C1617488%2C1619229%2C1620719%2C1624897 https://www.mozilla.org/security/advisories/mfsa2020-12 • CWE-787: Out-of-bounds Write •
CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0CVE-2020-6822 – Mozilla: Out of bounds write in GMPDecodeData when processing large images
https://notcve.org/view.php?id=CVE-2020-6822
On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in <code>GMPDecodeData</code>. It is possible that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75. En las compilaciones de 32 bits, podría haber ocurrido una escritura fuera de límites al procesar una imagen de más de 4 GB en (code)GMPDecodeData(/code). Es posible que con suficiente esfuerzo esto podría haber sido explotado para ejecutar código arbitrario. • https://bugzilla.mozilla.org/show_bug.cgi?id=1544181 https://usn.ubuntu.com/4335-1 https://www.mozilla.org/security/advisories/mfsa2020-12 https://www.mozilla.org/security/advisories/mfsa2020-13 https://www.mozilla.org/security/advisories/mfsa2020-14 https://access.redhat.com/security/cve/CVE-2020-6822 https://bugzilla.redhat.com/show_bug.cgi?id=1821676 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-6823
https://notcve.org/view.php?id=CVE-2020-6823
A malicious extension could have called <code>browser.identity.launchWebAuthFlow</code>, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75. Una extensión maliciosa podría haber llamado (code)browser.identity.launchWebAuthFlow(/code), controlando el redirect_uri y, por medio de la Promesa devuelta, obtenga el código de Autenticación y consiga acceso a la cuenta del usuario en el proveedor de servicios. Esta vulnerabilidad afecta a Firefox versiones anteriores a 75. • https://bugzilla.mozilla.org/show_bug.cgi?id=1614919 https://www.mozilla.org/security/advisories/mfsa2020-12 • CWE-862: Missing Authorization •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2020-6821 – Mozilla: Uninitialized memory could be read when using the WebGL copyTexSubImage method
https://notcve.org/view.php?id=CVE-2020-6821
When reading from areas partially or fully outside the source resource with WebGL's <code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75. Cuando se lee desde áreas parcial o completamente fuera del recurso fuente con el método <code>copyTexSubImage</code> de WebGL, la especificación requiere que los valores devueltos sean cero. Anteriormente, esta memoria no fue inicializada, conllevando a una divulgación de datos potencialmente confidenciales. • https://bugzilla.mozilla.org/show_bug.cgi?id=1625404 https://usn.ubuntu.com/4335-1 https://www.mozilla.org/security/advisories/mfsa2020-12 https://www.mozilla.org/security/advisories/mfsa2020-13 https://www.mozilla.org/security/advisories/mfsa2020-14 https://access.redhat.com/security/cve/CVE-2020-6821 https://bugzilla.redhat.com/show_bug.cgi?id=1821674 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-908: Use of Uninitialized Resource •