A Lucky 13 timing side channel in mbedtls_ssl_decrypt_buf in library/ssl_msg.c in Trusted Firmware Mbed TLS through 2.23.0 allows an attacker to recover secret key information. This affects CBC mode because of a computed time difference based on a padding length.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16150
Reference (s):
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1
- FEDORA:FEDORA-2020-48a1ae610c
- URL: https://lists.fedoraproject.org/archives/list/[email protected]/message/5OSOFUD6UTGTDDSQRS62BPXDU52I6PUA/
- FEDORA:FEDORA-2020-8b0d59bac6
- URL: https://lists.fedoraproject.org/archives/list/[email protected]/message/IRPBHCQKZXHVKOP5O5EWE7P76AWGUXQJ/