CVE-2021-36647

Katalog CVE

CVSS 4.7 · Medium EPSS 0,16%

Kerentanan Use of a Broken or Risky Cryptographic Algorithm pada arm mbed tls, trustedfirmware mbed tls. Skor CVSS 3.1 4.7 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

17 Januari 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.7 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-327: Use of a Broken or Risky Cryptographic Algorithm

EPSS (30 hari)

0,16% peluang dieksploitasi; lebih tinggi dari 5,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-07-1 advisory vendor
• https://github.com/ARMmbed/mbedtls/releases/ advisory pihak ketiga
• https://kouzili.com/Load-Step.pdf advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html