CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2020-36476
https://notcve.org/view.php?id=CVE-2020-36476
An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext buffers in mbedtls_ssl_read to erase unused application data from memory. Se ha detectado un problema en Mbed TLS versiones anteriores a 2.24.0 (y versiones anteriores a 2.16.8 LTS y versiones anteriores a 2.7.17 LTS). Falta la puesta a cero de los búferes de texto plano en la función mbedtls_ssl_read para borrar de la memoria los datos no usados de la aplicación. • https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8 https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17 https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html • CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer •
CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0CVE-2020-36477
https://notcve.org/view.php?id=CVE-2020-36477
An issue was discovered in Mbed TLS before 2.24.0. The verification of X.509 certificates when matching the expected common name (the cn argument of mbedtls_x509_crt_verify) with the actual certificate name is mishandled: when the subjecAltName extension is present, the expected name is compared to any name in that extension regardless of its type. This means that an attacker could impersonate a 4-byte or 16-byte domain by getting a certificate for the corresponding IPv4 or IPv6 address (this would require the attacker to control that IP address, though). Se ha detectado un problema en Mbed TLS versiones anteriores a 2.24.0. La comprobación de los certificados X.509 cuando se compara el nombre común esperado (el argumento cn de la función mbedtls_x509_crt_verify) con el nombre real del certificado es manejado inapropiadamente: cuando la extensión subjecAltName está presente, el nombre esperado es comparado con cualquier nombre de esa extensión independientemente de su tipo. • https://github.com/ARMmbed/mbedtls/issues/3498 https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0 https://security.gentoo.org/glsa/202301-08 • CWE-295: Improper Certificate Validation •
CVSS: 7.5EPSS: 0%CPEs: 17EXPL: 1CVE-2020-36478
https://notcve.org/view.php?id=CVE-2020-36478
An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid. Se ha detectado un problema en Mbed TLS versiones anteriores a 2.25.0 (y versiones anteriores a 2.16.9 LTS y versiones anteriores a 2.7.18 LTS). Una entrada de parámetros de algoritmo NULL parece idéntica a una matriz de REAL (tamaño cero) y, por tanto, el certificado es considerado válido. • https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf https://github.com/ARMmbed/mbedtls/issues/3629 https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9 https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0 https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18 https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html • CWE-295: Improper Certificate Validation •
CVSS: 5.3EPSS: 0%CPEs: 3EXPL: 1CVE-2020-36421
https://notcve.org/view.php?id=CVE-2020-36421
An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed. Se ha detectado un problema en Arm Mbed TLS versiones anteriores a 2.23.0. Debido a un canal lateral en la exponenciación modular, una clave privada RSA usada en un enclave seguro podría ser divulgada • https://bugs.gentoo.org/730752 https://github.com/ARMmbed/mbedtls/issues/3394 https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7 https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0 https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html • CWE-203: Observable Discrepancy •
CVSS: 5.3EPSS: 0%CPEs: 3EXPL: 0CVE-2020-36422
https://notcve.org/view.php?id=CVE-2020-36422
An issue was discovered in Arm Mbed TLS before 2.23.0. A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbedtls_ecp_mul_restartable. Se ha detectado un problema en Arm Mbed TLS versiones anteriores a 2.23.0. Un canal lateral permite la recuperación de una clave privada ECC, en relación con las funciones mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul y mbedtls_ecp_mul_restartable • https://bugs.gentoo.org/730752 https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7 https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0 https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html • CWE-203: Observable Discrepancy •