CVE-2020-36421

Gentoo Linux Security Advisory 202301-08

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed.

Se ha detectado un problema en Arm Mbed TLS versiones anteriores a 2.23.0. Debido a un canal lateral en la exponenciación modular, una clave privada RSA usada en un enclave seguro podría ser divulgada

Multiple vulnerabilities have been discovered in Mbed TLS, the worst of which could result in arbitrary code execution. Versions less than 2.28.1 are affected.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-19 CVE Reserved
2021-07-19 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-203: Observable Discrepancy

CAPEC

References (5)

URL	Tag	Source
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7	Release Notes
https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0	Release Notes
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html	Mailing List

URL	Date	SRC
https://github.com/ARMmbed/mbedtls/issues/3394	2024-08-04

URL	Date	SRC
https://bugs.gentoo.org/730752	2023-01-11

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Arm Search vendor "Arm"		Mbed Tls Search vendor "Arm" for product "Mbed Tls"				< 2.16.7 Search vendor "Arm" for product "Mbed Tls" and version " < 2.16.7"		-		Affected
Arm Search vendor "Arm"		Mbed Tls Search vendor "Arm" for product "Mbed Tls"				>= 2.17.0 < 2.23.0 Search vendor "Arm" for product "Mbed Tls" and version " >= 2.17.0 < 2.23.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected