Cleartext transmission of sensitive information in mbed TLS - CVE-2020-36423
Published: January 11, 2023
Vulnerability identifier: #VU71100
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-36423
CWE-ID: CWE-319
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to an issue in Lucky 13 counter-measure that could make it ineffective when
hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
macros). A remote attacker can gain access to sensitive information.
Affected software
mbed TLS
How to mitigate CVE-2020-36423
Install updates from vendor's website.
mbed TLS - addressed in versions 2.7.16, 2.16.7, 2.23.0