CVE-2021-45450
Last modified
CVE-2021-45450 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Trustedfirmware | Mbed Tls | >= 2.22.0, < 2.28.0 |
| Trustedfirmware | Mbed Tls | 3.0.0 |
| Fedoraproject | Fedora | 36 |
| Fedoraproject | Fedora | 37 |
References
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0Release Notes, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202301-08Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0Release Notes, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/202301-08Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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