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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade mbedtlsUpgrade mbedtls2Upgrade mbedtls3 | Oct 22, 2020 | Sep 2, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Sep 2, 2020 |
| Debian | — | Upgrade mbedtls | Dec 28, 2022 | Sep 2, 2020 |
| Freebsd | — | Upgrade mbedtls | Sep 7, 2020 | Sep 6, 2020 |
| Gentoo Linux | — | Upgrade net-libs/mbedtls. | Jan 12, 2023 | Sep 2, 2020 |
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