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.

Related CPE's

a

arm

mbed_tls

3

References

https://github.com/ARMmbed/mbedtls/releases/

Third Party Advisory

https://kouzili.com/Load-Step.pdf

Third Party Advisory

https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-07-1

Vendor Advisory

https://github.com/ARMmbed/mbedtls/releases/

Third Party Advisory

https://kouzili.com/Load-Step.pdf

Third Party Advisory

https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-07-1

Vendor Advisory

Weaknesses

[email protected]

Primary
CWE-327

134c704f-9b21-4f2e-91b3-4a467353bcc0

Secondary
CWE-327

CVSS impact metrics

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

4.7 · Medium

  • CVSS V3.1

  • CVSS V3.0

  • CVSS V2.0

Information

Source identifier

[email protected]

Vulnerability status

Modified

Published

2023-01-17T21:15:10.880

2 years ago

Last modified

2025-04-08T21:15:44.210

2 months ago