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CVSS: 2.5EPSS: 0%CPEs: 1EXPL: 1

Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10. Las firmas son escritas en el disco antes y se leen durante la verificación, lo que podría estar sujeto a una condición de carrera cuando un proceso local malicioso o un usuario está reemplazando el archivo. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.10 • https://bugzilla.mozilla.org/show_bug.cgi?id=1692899 https://www.mozilla.org/security/advisories/mfsa2021-14 https://access.redhat.com/security/cve/CVE-2021-29948 https://bugzilla.redhat.com/show_bug.cgi?id=1951381 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •

CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0

Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. Mediante navegaciones complicadas con nuevas ventanas, una página HTTP podría haber heredado un icono de bloqueo seguro de una página HTTPS. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 78.10, Thunderbird versiones anteriores a 78.10 y Firefox versiones anteriores a 88 • https://bugzilla.mozilla.org/show_bug.cgi?id=1667456 https://www.mozilla.org/security/advisories/mfsa2021-14 https://www.mozilla.org/security/advisories/mfsa2021-15 https://www.mozilla.org/security/advisories/mfsa2021-16 https://access.redhat.com/security/cve/CVE-2021-23998 https://bugzilla.redhat.com/show_bug.cgi?id=1951366 • CWE-281: Improper Preservation of Permissions CWE-345: Insufficient Verification of Data Authenticity •

CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 1

If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. Si una URL Blob se cargó mediante alguna interacción inusual del usuario, podría haber sido cargada por el Principal del Sistema y conceder privilegios adicionales que no deberían concederse al contenido web. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 78.10, Thunderbird versiones anteriores a 78.10 y Firefox versiones anteriores a 88 • https://bugzilla.mozilla.org/show_bug.cgi?id=1691153 https://www.mozilla.org/security/advisories/mfsa2021-14 https://www.mozilla.org/security/advisories/mfsa2021-15 https://www.mozilla.org/security/advisories/mfsa2021-16 https://access.redhat.com/security/cve/CVE-2021-23999 https://bugzilla.redhat.com/show_bug.cgi?id=1951368 • CWE-269: Improper Privilege Management CWE-281: Improper Preservation of Permissions CWE-697: Incorrect Comparison •

CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0

The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. El JIT de WebAssembly podía calcular mal el tamaño de un tipo de retorno, lo que podía conllevar a una lectura nula y resultar en un bloqueo. • https://bugzilla.mozilla.org/show_bug.cgi?id=1700690 https://www.mozilla.org/security/advisories/mfsa2021-14 https://www.mozilla.org/security/advisories/mfsa2021-15 https://www.mozilla.org/security/advisories/mfsa2021-16 https://access.redhat.com/security/cve/CVE-2021-29945 https://bugzilla.redhat.com/show_bug.cgi?id=1951370 • CWE-476: NULL Pointer Dereference CWE-682: Incorrect Calculation •

CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0

An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1. Un atacante puede llevar a cabo un ataque DoS para impedir a un usuario de enviar un correo electrónico cifrado a un corresponsal. Si un atacante crea una clave OpenPGP diseñada con una subclave que presenta una autofirma no válida, y el usuario de Thunderbird importa la clave diseñada, entonces Thunderbird puede intentar usar la subclave no válida, pero la biblioteca RNP lo rechaza para ser usado, causando que el cifrado presente un fallo. • https://bugzilla.mozilla.org/show_bug.cgi?id=1666360 https://www.mozilla.org/security/advisories/mfsa2021-13 https://access.redhat.com/security/cve/CVE-2021-23993 https://bugzilla.redhat.com/show_bug.cgi?id=1948395 • CWE-347: Improper Verification of Cryptographic Signature •