#VU96647 Insufficient Technical Documentation in mbed TLS - CVE-2024-45157

Vulnerability identifier: #VU96647

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-45157

CWE-ID: CWE-1059

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
mbed TLS
Universal components / Libraries / Libraries used by multiple products

Vendor: ARM

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error in product documentation. 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

mbed TLS: 2.0.0, 2.1.0 - 2.19.1, 2.2.0 - 2.28.8, 2.3.0, 2.4.0 - 2.4.2, 2.5.0 - 2.5.1, 2.6.0 - 2.6.1, 2.7.0 - 2.7.19, 2.8.0, 2.9.0, 3.0.0, 3.1.0, 3.2.0, 3.2.1, 3.3.0, 3.4.0, 3.4.1, 3.5.0 - 3.5.2, 3.6.0

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External links
https://github.com/ARMmbed/mbedtls/releases/tag/mbedtls-2.28.9
https://github.com/ARMmbed/mbedtls/releases/tag/mbedtls-3.6.1

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.