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CVE-2020-36424

Date: July 18, 2021

An issue was discovered in Arm Mbed TLS before 2.24.0. An attacker can recover a private key (for RSA or static Diffie-Hellman) via a side-channel attack against generation of base blinding/unblinding values.

Language: C

Severity Score

4.7

Related Resources (9)

Url: https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html

Url: https://bugs.gentoo.org/740108

Url: https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8

Url: https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-2

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-36424

Url: https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17

Url: https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0

Url: https://security-tracker.debian.org/tracker/CVE-2020-36424

Url: https://www.mend.io/vulnerability-database/CVE-2020-36424

Severity Score

4.7

Weakness Type (CWE)

Observable Discrepancy

CWE-203

CVSS v3.1

Base Score:	4.7
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	HIGH
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	NONE
Availability (A):	NONE

CVSS v2

Base Score:	1.9
Access Vector (AV):	LOCAL
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	NONE
Availability (A):	NONE
Additional information:

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