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MitreCVE-2020-16150

HistorySep 02, 2020 - 4:15 p.m.

CVE-2020-16150

2020-09-0216:15:12

CWE-203

mitre

web.nvd.nist.gov

cve-2020-16150

lucky 13

side channel attack

mbedtls

trusted firmware

mbed tls

cbc mode

security vulnerability

nvd

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.4

Confidence

High

EPSS

0.001

Percentile

23.7%

JSON

A Lucky 13 timing side channel in mbedtls_ssl_decrypt_buf in library/ssl_msg.c in Trusted Firmware Mbed TLS through 2.23.0 allows an attacker to recover secret key information. This affects CBC mode because of a computed time difference based on a padding length.

Affected configurations

Nvd

Node

armmbed_tlsRange<2.7.17

armmbed_tlsRange2.8.0–2.16.8

armmbed_tlsRange2.17.0–2.24.0

Node

fedoraprojectfedoraMatch31

fedoraprojectfedoraMatch32

fedoraprojectfedoraMatch33

Node

debiandebian_linuxMatch10.0

VendorProductVersionCPE
armmbed_tls*cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
fedoraprojectfedora31cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
fedoraprojectfedora32cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
fedoraprojectfedora33cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
debiandebian_linux10.0cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
arm	mbed_tls	*	cpe:2.3:a:arm:mbed_tls::::::::
fedoraproject	fedora	31	cpe:2.3:o:fedoraproject:fedora:31:::::::*
fedoraproject	fedora	32	cpe:2.3:o:fedoraproject:fedora:32:::::::*
fedoraproject	fedora	33	cpe:2.3:o:fedoraproject:fedora:33:::::::*
debian	debian_linux	10.0	cpe:2.3:o:debian:debian_linux:10.0:::::::*