CVE-2024-45157 Weak cryptography in n/a

Medium 5.1 Published 5 Sep 2024 Updated 14 Mar 2025

Mbed TLS fails to use the configured HMAC_DRBG algorithm under specific conditions, potentially weakening cryptographic randomness.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2024-45157?

CVE-2024-45157 is a medium-severity vulnerability in n/a, published on 5 Sep 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in Mbed TLS before 2.28.9 and 3.x before 3.6.1, in which the user-selected algorithm is not used. Unlike previously documented, enabling MBEDTLS_PSA_HMAC_DRBG_MD_TYPE does not cause the PSA subsystem to use HMAC_DRBG: it uses HMAC_DRBG only when MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG and MBEDTLS_CTR_DRBG_C are disabled.

Weakness: CWE-696

Which versions are affected by CVE-2024-45157?

It affects 1 product.

Linux distribution packages (1)

mbedtls-2 openSUSE:Tumbleweed All versions 2.28.9-1.1

Products include Trustedfirmware Mbed Tls.

How do I fix CVE-2024-45157?

Upgrade to a fixed version.

Is CVE-2024-45157 being exploited?

There is no known exploitation of CVE-2024-45157 in the wild and no public exploit code.

Sources

Also known as ALPINE-CVE-2024-45157, DEBIAN-CVE-2024-45157, GHSA-cvp8-hm87-hr8x, JLSEC-2025-226, UBUNTU-CVE-2024-45157, openSUSE-SU-2024:14304-1.