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Vulnerability Intelligence

CVE-2021-24119 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2021-24119

CVE-2021-24119

MEDIUM4.9

In Trusted Firmware Mbed TLS 2

Published Jul 14, 2021

Modified 4 months ago

Details

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.

References

https://github.com/ARMmbed/mbedtls/releases

https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md

https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html

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

https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DRRVY7DMTX3ECFNZKDYTSFEG5AI2HBC6/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYJW7HAW3TDV2YMDFYXP3HD6WRQRTLJW/

https://www.cve.org/CVERecord?id=CVE-2021-24119

CVSS Analysis

CVSS v3.1

4.9

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

HighPR:H

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

NoneI:N

Availability

NoneA:N

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

Ecosystems

Timeline

PublishedJul 14, 2021

ModifiedNov 3, 2025