CVE-2020-10932 - CERT CVE
ID CVE-2020-10932
Sažetak 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.
Reference
CVSS
Base: 1.9
Impact: 2.9
Exploitability:3.4
Pristup
VektorSloženostAutentikacija
LOCAL MEDIUM NONE
Impact
PovjerljivostCjelovitostDostupnost
PARTIAL NONE NONE
CVSS vektor AV:L/AC:M/Au:N/C:P/I:N/A:N
Zadnje važnije ažuriranje 03-03-2023 - 15:32
Objavljeno 15-04-2020 - 14:15