PT-2025-48500 · Julia · Mbedtls Jll

Published 2025-11-21 · Updated 2025-11-21

OSV

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.

Related Identifiers

JLSEC-2025-202

Affected Products

Mbedtls Jll

References · 7

• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5OSOFUD6UTGTDDSQRS62BPXDU52I6PUA · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRPBHCQKZXHVKOP5O5EWE7P76AWGUXQJ · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD3NM6GD73CTFFRBKG5G2ACXGG7QQHCC · Vendor Advisory
• https://osv.dev/vulnerability/JLSEC-2025-202 · Vendor Advisory
• https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1 · Note
• https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html · Note
• https://tls.mbed.org/tech-updates/security-advisories · Note