CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-23960 – Mozilla: Use-after-poison for incorrectly redeclared JavaScript variables during GC
https://notcve.org/view.php?id=CVE-2021-23960
Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. Realizar una recolección de basura en variables de JavaScript declaradas nuevamente resultó en un usuario después del envenenamiento y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox versiones anteriores a 85, Thunderbird versiones anteriores a 78,7 y Firefox ESR versiones anteriores a 78,7 The Mozilla Foundation Security Advisory describes this flaw as: Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. • https://bugzilla.mozilla.org/show_bug.cgi?id=1675755 https://www.mozilla.org/security/advisories/mfsa2021-03 https://www.mozilla.org/security/advisories/mfsa2021-04 https://www.mozilla.org/security/advisories/mfsa2021-05 https://access.redhat.com/security/cve/CVE-2021-23960 https://bugzilla.redhat.com/show_bug.cgi?id=1920650 • CWE-626: Null Byte Interaction Error (Poison Null Byte) •
CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-23964 – Mozilla: Memory safety bugs fixed in Firefox 85 and Firefox ESR 78.7
https://notcve.org/view.php?id=CVE-2021-23964
Mozilla developers reported memory safety bugs present in Firefox 84 and Firefox ESR 78.6. 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 < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. Los desarrolladores de Mozilla reportaron bugs de seguridad de la memoria presentes en Firefox versión 84 y Firefox ESR versión 78.6. Algunos de estos bugs mostraron evidencia de corrupción de la memoria y suponemos que con esfuerzo suficiente algunos de ellos podrían haber sido explotado para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1662507%2C1666285%2C1673526%2C1674278%2C1674835%2C1675097%2C1675844%2C1675868%2C1677590%2C1677888%2C1680410%2C1681268%2C1682068%2C1682938%2C1683736%2C1685260%2C1685925 https://www.mozilla.org/security/advisories/mfsa2021-03 https://www.mozilla.org/security/advisories/mfsa2021-04 https://www.mozilla.org/security/advisories/mfsa2021-05 https://access.redhat.com/security/cve/CVE-2021-23964 https://bugzilla.redhat.com/show_bug.cgi?id=1920651 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •
CVSS: 4.3EPSS: 0%CPEs: 3EXPL: 0CVE-2021-23953 – Mozilla: Cross-origin information leakage via redirected PDF requests
https://notcve.org/view.php?id=CVE-2021-23953
If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. Si un usuario hace clic en un PDF diseñado específicamente, el lector de PDF podría confundirse y filtrar información de origen cruzado, cuando dicha información es servida como datos fragmentados. Esta vulnerabilidad afecta a Firefox versiones anteriores a 85, Thunderbird versiones anteriores a 78,7 y Firefox ESR versiones anteriores a 78,7 The Mozilla Foundation Security Advisory describes this flaw as: If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. • https://bugzilla.mozilla.org/show_bug.cgi?id=1683940 https://www.mozilla.org/security/advisories/mfsa2021-03 https://www.mozilla.org/security/advisories/mfsa2021-04 https://www.mozilla.org/security/advisories/mfsa2021-05 https://access.redhat.com/security/cve/CVE-2021-23953 https://bugzilla.redhat.com/show_bug.cgi?id=1920646 • CWE-829: Inclusion of Functionality from Untrusted Control Sphere •
CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-23954 – Mozilla: Type confusion when using logical assignment operators in JavaScript switch statements
https://notcve.org/view.php?id=CVE-2021-23954
Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7. Usando los nuevos operadores de asignación lógica en una declaración de cambio de JavaScript podría haber causado una confusión de tipos, conllevando a una corrupción de la memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox versiones anteriores a 85, Thunderbird versiones anteriores a 78,7 y Firefox ESR versiones anteriores a 78,7 The Mozilla Foundation Security Advisory describes this flaw as: Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. • https://bugzilla.mozilla.org/show_bug.cgi?id=1684020 https://www.mozilla.org/security/advisories/mfsa2021-03 https://www.mozilla.org/security/advisories/mfsa2021-04 https://www.mozilla.org/security/advisories/mfsa2021-05 https://access.redhat.com/security/cve/CVE-2021-23954 https://bugzilla.redhat.com/show_bug.cgi?id=1920648 • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2020-26975
https://notcve.org/view.php?id=CVE-2020-26975
When a malicious application installed on the user's device broadcast an Intent to Firefox for Android, arbitrary headers could have been specified, leading to attacks such as abusing ambient authority or session fixation. This was resolved by only allowing certain safe-listed headers. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 84. • https://bugzilla.mozilla.org/show_bug.cgi?id=1661071 https://www.mozilla.org/security/advisories/mfsa2020-54 •