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CVE-2020-36424

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Date: July 19, 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

Related Resources (9)

https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
https://bugs.gentoo.org/740108
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-2
https://nvd.nist.gov/vuln/detail/CVE-2020-36424
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
https://security-tracker.debian.org/tracker/CVE-2020-36424
https://www.mend.io/vulnerability-database/CVE-2020-36424

Severity Score

Weakness Type (CWE)

Observable Discrepancy

CWE-203

Top Fix

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Upgrade to version v2.24.0,v2.16.8,v2.7.17

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CVSS v3.1

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

CVSS v2

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

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