CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 0CVE-2020-16150
https://notcve.org/view.php?id=CVE-2020-16150
A Lucky 13 timing side channel in mbedtls_ssl_decrypt_buf in library/ssl_msg.c in Trusted Firmware Mbed TLS through 2.23.0 allows an attacker to recover secret key information. This affects CBC mode because of a computed time difference based on a padding length. Un canal lateral de sincronización Lucky versión 13, en la función mbedtls_ssl_decrypt_buf en el archivo library/ssl_msg.c en Trusted Firmware Mbed TLS versiones hasta 2.23.0, permite a un atacante recuperar información de la clave secreta. Esto afecta al modo CBC debido a una diferencia de tiempo calculada basada en una longitud de relleno • https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5OSOFUD6UTGTDDSQRS62BPXDU52I6PUA https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRPBHCQKZXHVKOP5O5EWE7P76AWGUXQJ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD3NM6GD73CTFFRBKG5G2ACXGG7QQHCC https://tls.mbed.org/tech-updates/security-advisories https://tls.mbed.org/tech-updates/security-adv • CWE-203: Observable Discrepancy •
CVSS: 4.7EPSS: 0%CPEs: 5EXPL: 0CVE-2020-10932
https://notcve.org/view.php?id=CVE-2020-10932
An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. An attacker that can get precise enough side-channel measurements can recover the long-term ECDSA private key by (1) reconstructing the projective coordinate of the result of scalar multiplication by exploiting side channels in the conversion to affine coordinates; (2) using an attack described by Naccache, Smart, and Stern in 2003 to recover a few bits of the ephemeral scalar from those projective coordinates via several measurements; and (3) using a lattice attack to get from there to the long-term ECDSA private key used for the signatures. Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS. Se detectó un problema en Arm Mbed TLS versiones anteriores a 2.16.6 y 2.7.x versiones anteriores a 2.7.15. Un atacante que puede obtener mediciones de canal lateral lo suficientemente precisas que puede recuperar la clave privada ECDSA a largo plazo al (1) reconstruir la coordenada proyectiva del resultado de la multiplicación escalar explotando canales laterales en la conversión a coordenadas afines; (2) usar un ataque descrito por Naccache, Smart y Stern en 2003 para recuperar algunos bits del escalar efímero de esas coordenadas proyectivas por medio de varias mediciones; y (3) usar un ataque de red para llegar desde allí a la clave privada ECDSA a largo plazo utilizada para las firmas. • https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCWN5HIF4CJ2LZTOMEBJ7Q4IMMV7ZU2V https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNOS2IIBH5WNJXZUV546PY7666DE7Y3L https://tls.mbed.org/tech-updates/releases/mbedtls-2.16.6-and-2.7.15-released https://tls.mbed.org/tech-updates/security-advisories https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advi • CWE-203: Observable Discrepancy CWE-327: Use of a Broken or Risky Cryptographic Algorithm •
CVSS: 5.9EPSS: 0%CPEs: 5EXPL: 0CVE-2020-10941
https://notcve.org/view.php?id=CVE-2020-10941
Arm Mbed TLS before 2.16.5 allows attackers to obtain sensitive information (an RSA private key) by measuring cache usage during an import. Arm Mbed TLS versiones anteriores a 2.16.5, permite a atacantes obtener información confidencial (una clave privada RSA) al medir el uso de la memoria caché durante una importación. • https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5JPE2HFBDJF3UBT6Q4VWLKNKCVCMX25J https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WD6OSOLLAR2AVPJAMGUKWRXN6477IHHV https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-02 •
CVSS: 4.7EPSS: 0%CPEs: 7EXPL: 0CVE-2019-18222
https://notcve.org/view.php?id=CVE-2019-18222
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks. La implementación de la firma ECDSA en el archivo ecdsa.c en Arm Mbed Crypto versión 2.1 y Mbed TLS versiones hasta 2.19.1, no reduce el escalar ciego antes de calcular el inverso, lo que permite a un atacante local recuperar la clave privada por medio de ataques de canal lateral. • https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A3GWQNONS7GRORXZJ7MOJFUEJ2ZJ4OUW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NGDACU65MYZXXVPQP2EBHUJGOR4RWLVY https://tls.mbed.org/tech-updates/security-advisories https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-12 • CWE-203: Observable Discrepancy •
CVSS: 5.3EPSS: 0%CPEs: 8EXPL: 0CVE-2019-16910
https://notcve.org/view.php?id=CVE-2019-16910
Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.) Arm Mbed TLS versiones anteriores a 2.19.0 y Arm Mbed Crypto versiones anteriores a 2.0.0, cuando el ECDSA determinista está habilitado, usa un RNG con entropía insuficiente para el cegamiento, lo que podría permitir a un atacante recuperar una clave privada por medio de ataques de canal lateral si una víctima firma el mismo mensaje muchas veces. (Para Mbed TLS, la corrección también está disponible en las versiones 2.7.12 y 2.16.3.) • https://github.com/ARMmbed/mbedtls/commit/298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd https://github.com/ARMmbed/mbedtls/commit/33f66ba6fd234114aa37f0209dac031bb2870a9b https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CGSKQSGR5SOBRBXDSSPTCDSBB5K3GMPF https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSFFOROD6IVLADZHNJC2LPDV7FQRP7XB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproje •