Vulnerability in Trustedfirmware Mbed TLS
CVE-2021-45450
In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.000
Affected products
- Trustedfirmware Mbed TLS — versions 3.0.0
- Fedoraproject Fedora — versions 36, 37
Weakness classification (CWE)
References
- github.com/ARMmbed/mbedtls/releases/tag/v2.28.0 (Third Party Advisory, Release Notes)
- github.com/ARMmbed/mbedtls/releases/tag/v3.1.0 (Third Party Advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List)
- security.gentoo.org/glsa/202301-08 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-45450?
- CVE-2021-45450 is a high-severity vulnerability in Trustedfirmware Mbed TLS, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2021-12-21.
- How severe is CVE-2021-45450?
- High severity. CVSS v3 base score is 7.5 out of 10.