CVE-2020-36423 — Cleartext Transmission of Sensitive Info in ARM Mbed TLS

CWE-319 — Cleartext Transmission of Sensitive Info6 documents6 sources
Severity
7.5HIGHNVD
EPSS
0.7%
top 28.78%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mbed MbedtlsARM Mbed TLSDebian Linux
Timeline
PublishedJul 19
Latest updateMay 13

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDarm/mbed_tls2.17.0 — 2.23.0+1
▶Debianmbed/mbedtls< 2.16.9-0.1+3

Also affects: Debian Linux 10.0

Patches

Patch: bugs.gentoo.org ↗Patch: bugs.gentoo.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-x2rg-rvm2-p2f9: An issue was discovered in Arm Mbed TLS before 2↗2022-05-24
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CVEList
CVE-2020-36423: An issue was discovered in Arm Mbed TLS before 2↗2021-07-19
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OSV
CVE-2020-36423: An issue was discovered in Arm Mbed TLS before 2↗2021-07-19
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📋Vendor Advisories

1
Debian
CVE-2020-36423: mbedtls - An issue was discovered in Arm Mbed TLS before 2.23.0. A remote attacker can rec...↗2020
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📄Research Papers

1
arXiv
SoK: Where's the "up"?! A Comprehensive (bottom-up) Study on the Security of Arm Cortex-M Systems↗2024-05-13
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CVE-2020-36423 — ARM Mbed TLS vulnerability | cvebase