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MitreCVE-2021-45450

HistoryDec 21, 2021 - 7:15 a.m.

CVE-2021-45450

2021-12-2107:15:06

CWE-327

mitre

web.nvd.nist.gov

cve-2021-45450

mbed tls

security vulnerability

policy bypass

oracle-based decryption

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

AI Score

7.5

Confidence

High

EPSS

0.002

Percentile

57.9%

JSON

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.

Affected configurations

Nvd

Node

armmbed_tlsRange2.22.0–2.28.0

armmbed_tlsMatch3.0.0

Node

fedoraprojectfedoraMatch36

fedoraprojectfedoraMatch37

VendorProductVersionCPE
armmbed_tls*cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
armmbed_tls3.0.0cpe:2.3:a:arm:mbed_tls:3.0.0:*:*:*:*:*:*:*
fedoraprojectfedora36cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
fedoraprojectfedora37cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
arm	mbed_tls	*	cpe:2.3:a:arm:mbed_tls::::::::
arm	mbed_tls	3.0.0	cpe:2.3:a:arm:mbed_tls:3.0.0:::::::*
fedoraproject	fedora	36	cpe:2.3:o:fedoraproject:fedora:36:::::::*
fedoraproject	fedora	37	cpe:2.3:o:fedoraproject:fedora:37:::::::*