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: 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: 8.1EPSS: 0%CPEs: 3EXPL: 0CVE-2021-23981 – Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read
https://notcve.org/view.php?id=CVE-2021-23981
A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. Una carga de textura de un Objeto de Búfer de Píxeles podría haber confundido el código WebGL para omitir el enlace del búfer usado para descomprimirlo, resultando en la corrupción de la memoria y una filtración o bloqueo de información potencialmente explotable. Esta vulnerabilidad afecta a Firefox ESR versión 78.9, Firefox versiones anteriores a 87, and Thunderbird versiones anteriores a 78.9. The Mozilla Foundation Security Advisory describes this issue as: A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash. • https://bugzilla.mozilla.org/show_bug.cgi?id=1692832 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-2021-23981 https://bugzilla.redhat.com/show_bug.cgi?id=1942783 • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
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 •
CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-23982 – Mozilla: Internal network hosts could have been probed by a malicious webpage
https://notcve.org/view.php?id=CVE-2021-23982
Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. Usando técnicas que se basaron en la investigación de slipstream, una página web maliciosa podría haber escaneado tanto los hosts de una red interna como los servicios que se ejecutan en la máquina local del usuario usando conexiones WebRTC. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 78.9, Firefox versiones anteriores a 87, y Thunderbird versiones anteriores a 78.9 • https://bugzilla.mozilla.org/show_bug.cgi?id=1677046 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-2021-23982 https://bugzilla.redhat.com/show_bug.cgi?id=1942785 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-326: Inadequate Encryption Strength •