Home/CVE/An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can recover plaintext because a certain Lucky 1
CVE

CVE-2020-36423

An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can recover plaintext because a certain Lucky 1

An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can recover plaintext because a certain Lucky 13 countermeasure doesn't properly consider the case of a hardware accelerator.

HIGH · CVSS 7.5 EPSS 0.00663
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-319Cleartext Transmission of Sensitive Information
▤

Affected Products & Versions

3
arm mbed tls< 2.16.7
arm mbed tls>= 2.17.0 and < 2.23.0
debian linuxall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Jul 2021 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugs.gentoo.org/730752Issue TrackingPatchThird Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7Release NotesThird Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing ListThird Party Advisory
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