CVE-2021-45450
First published: Tue Dec 21 2021(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ARM mbed TLS | >=2.22.0<2.28.0 | |
| ARM mbed TLS | =3.0.0 | |
| ARM mbed TLS | =3.1.0 | |
| Fedoraproject Fedora | =36 | |
| Fedoraproject Fedora | =37 |
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Reference Links
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
- https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/
- https://security.gentoo.org/glsa/202301-08
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/
Frequently Asked Questions
What is CVE-2021-45450?
CVE-2021-45450 is a vulnerability in Mbed TLS before 2.28.0 and 3.x before 3.1.0 that allows policy bypass or oracle-based decryption.
What is the severity of CVE-2021-45450?
The severity of CVE-2021-45450 is high, with a CVSS score of 7.5.
How does CVE-2021-45450 affect ARM mbed TLS?
CVE-2021-45450 affects ARM mbed TLS versions before 2.28.0 and 3.x before 3.1.0.
How can CVE-2021-45450 be exploited?
CVE-2021-45450 can be exploited by an untrusted application gaining access to memory locations containing the output buffer of the psa_cipher_generate_iv and psa_cipher_encrypt functions.
How can I fix CVE-2021-45450?
To fix CVE-2021-45450, update Mbed TLS to version 2.28.0 or later for the 2.x branch or version 3.1.0 or later for the 3.x branch.
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- agent/author
- agent/type
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/references
- agent/weakness
- agent/severity
- agent/tags
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- agent/event
- collector/nvd-api
- agent/software-canonical-lookup-request
- collector/mitre-cve
- source/MITRE
- vendor/arm
- canonical/arm mbed tls
- version/arm mbed tls/2.22.0
- version/arm mbed tls/3.0.0
- version/arm mbed tls/3.1.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/36
- version/fedoraproject fedora/37