Vulnerability in Trustedfirmware Mbed TLS
CVE-2024-45157
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- mbed-tls.readthedocs.io/en/latest/security-advisories/ (Vendor Advisory)
- github.com/Mbed-TLS/mbedtls/releases/ (Release Notes)
- mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory… (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-45157?
- CVE-2024-45157 is a medium-severity vulnerability in Trustedfirmware Mbed TLS, classified under CWE-696. CVSS score: 5.1/10. Published 2024-09-05.
- How severe is CVE-2024-45157?
- Medium severity. CVSS v3 base score is 5.1 out of 10.
- Is CVE-2024-45157 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.