ALT-PU-2021-2172-1
Closed vulnerabilities
Published: 2021-07-07
BDU:2023-00604
Уязвимость функции mbedtls_mpi_exp_mod() (lignum.c) программного обеспечения Mbed TLS, позволяющая нарушителю раскрыть защищаемую информацию
Severity: MEDIUM (4.7)
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References:
Published: 2023-01-18
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-36647
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.
Severity: MEDIUM (4.7)
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References:
- https://github.com/ARMmbed/mbedtls/releases/
- https://github.com/ARMmbed/mbedtls/releases/
- https://kouzili.com/Load-Step.pdf
- https://kouzili.com/Load-Step.pdf
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-07-1
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-07-1