CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-29946 – Mozilla: Port blocking could be bypassed
https://notcve.org/view.php?id=CVE-2021-29946
Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88. Los puertos que se escribieron como un desbordamiento de enteros por encima de los límites de un entero de 16 bits podrían haber omitido las restricciones de bloqueo de puertos cuando se usaron en la cabecera Alt-Svc. 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=1698503 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-2021-29946 https://bugzilla.redhat.com/show_bug.cgi?id=1951371 • CWE-190: Integer Overflow or Wraparound •
CVSS: 4.3EPSS: 0%CPEs: 1EXPL: 0CVE-2021-23992 – Mozilla: A crafted OpenPGP key with an invalid user ID could be used to confuse the user
https://notcve.org/view.php?id=CVE-2021-23992
Thunderbird did not check if the user ID associated with an OpenPGP key has a valid self signature. An attacker may create a crafted version of an OpenPGP key, by either replacing the original user ID, or by adding another user ID. If Thunderbird imports and accepts the crafted key, the Thunderbird user may falsely conclude that the false user ID belongs to the correspondent. This vulnerability affects Thunderbird < 78.9.1. Thunderbird no comprueba si el ID de usuario asociado a una clave OpenPGP presenta una autofirma válida. • https://bugzilla.mozilla.org/show_bug.cgi?id=1666236 https://www.mozilla.org/security/advisories/mfsa2021-13 https://access.redhat.com/security/cve/CVE-2021-23992 https://bugzilla.redhat.com/show_bug.cgi?id=1948394 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 6.8EPSS: 0%CPEs: 1EXPL: 1CVE-2021-23991 – Mozilla: An attacker may use Thunderbird's OpenPGP key refresh mechanism to poison an existing key
https://notcve.org/view.php?id=CVE-2021-23991
If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity period of her key, but Alice's updated key has not yet been imported, an attacker may send an email containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects Thunderbird < 78.9.1. Si un usuario de Thunderbird ha importado previamente la clave OpenPGP de Alice, y Alice ha ampliado el periodo de validez de su clave, pero la clave actualizada de Alice aún no ha sido importada, un atacante puede enviar un correo electrónico conteniendo una versión diseñada de la clave de Alice con una subclave no válida, Thunderbird podría posteriormente intentar usar la subclave no válida, y producirá un fallo al enviar el correo electrónico cifrado a Alice. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.9.1 • https://bugzilla.mozilla.org/show_bug.cgi?id=1673240 https://www.mozilla.org/security/advisories/mfsa2021-13 https://access.redhat.com/security/cve/CVE-2021-23991 https://bugzilla.redhat.com/show_bug.cgi?id=1948393 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-23993 – Mozilla: Inability to send encrypted OpenPGP email after importing a crafted OpenPGP key
https://notcve.org/view.php?id=CVE-2021-23993
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 •
CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-23987 – Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9
https://notcve.org/view.php?id=CVE-2021-23987
Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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 < 78.9, Firefox < 87, and Thunderbird < 78.9. Los desarrolladores y miembros de la comunidad de Mozilla informaron de fallos de seguridad de memoria presentes en Firefox 86 y Firefox ESR 78.8. Algunos de estos fallos mostraban evidencias de corrupción de memoria y suponemos que con suficiente esfuerzo algunos de ellos podrían haber sido explotados para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1513519%2C1683439%2C1690169%2C1690718 https://www.mozilla.org/security/advisories/mfsa2021-10 https://www.mozilla.org/security/advisories/mfsa2021-11 https://www.mozilla.org/security/advisories/mfsa2021-12 https://access.redhat.com/security/cve/CVE-2021-23987 https://bugzilla.redhat.com/show_bug.cgi?id=1942787 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •