Security Advisory

CVE-2021-36647

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-01-17 00:00:00
Last updated 2025-11-03 19:26:11
Assigner mitre
State PUBLISHED

Description

Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA.