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CVE-2021-24119

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Date: July 13, 2021

In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.

Language: C

Severity Score

Related Resources (11)

https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYJW7HAW3TDV2YMDFYXP3HD6WRQRTLJW/
https://security-tracker.debian.org/tracker/CVE-2021-24119
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DRRVY7DMTX3ECFNZKDYTSFEG5AI2HBC6/
https://nvd.nist.gov/vuln/detail/CVE-2021-24119
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DRRVY7DMTX3ECFNZKDYTSFEG5AI2HBC6/
https://github.com/ARMmbed/mbedtls/releases
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EYJW7HAW3TDV2YMDFYXP3HD6WRQRTLJW/
https://www.mend.io/vulnerability-database/CVE-2021-24119

Severity Score

Weakness Type (CWE)

Observable Discrepancy

CWE-203

Top Fix

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Upgrade Version

Upgrade to version mbedtls-2.26.0,v2.26.0

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CVSS v3.1

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

CVSS v2

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

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