CVE-2024-45159 json
An issue was discovered in Mbed TLS 3.x before 3.6.1.
published 2024-09-05 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-41339
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
An issue was discovered in Mbed TLS 3.x before 3.6.1. With TLS 1.3, when a server enables optional authentication of the client, if the client-provided certificate does not have appropriate values in if keyUsage or extKeyUsage extensions, then the return value of mbedtls_ssl_get_verify_result() would incorrectly have the MBEDTLS_X509_BADCERT_KEY_USAGE and MBEDTLS_X509_BADCERT_KEY_USAGE bits clear. As a result, an attacker that had a certificate valid for uses other than TLS client authentication would nonetheless be able to use it for TLS client authentication. Only TLS 1.3 servers were affected, and only with optional authentication (with required authentication, the handshake would be aborted with a fatal alert).
Patch / fix
- trustedfirmware mbed_tls 3.6.1
- mbedtls Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 3.6.1-r0
- mbedtls3 Alpine 3.24 3.6.1-r0
alpine advisories ALPINE-CVE-2024-45159
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
mbed-tls.readthedocs.io
/en/latest/security-advisories/mbedtls-security-advisory-2024-08-3/
vendor-advisory
-
mbed-tls.readthedocs.io
/en/latest/security-advisories/
issue-tracking
-
github.com
/Mbed-TLS/mbedtls/releases/
release-notes
Sources
- CVE List CVE-2024-45159
- NVD CVE-2024-45159
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.