CVE-2020-16150
MEDIUM5.5EPSS 0.08%Published: 9/2/2020Modified: 4/28/2026
Description
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.
Affected packages (2)
- Alpine/mbedtlsfrom 0, < 2.16.8-r0
- Debian/mbedtlsfrom 0, < 2.16.9-0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |