{"id":"JLSEC-2025-202","summary":"A Lucky 13 timing side channel in `mbedtls_ssl_decrypt_buf` in `library/ssl_msg.c` in Trusted...","details":"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.","modified":"2026-07-23T22:30:18.917514001Z","published":"2025-11-21T15:59:04.054Z","upstream":["CVE-2020-16150"],"database_specific":{"sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16150","database_specific":{"status":"Modified"},"id":"CVE-2020-16150","imported":"2026-07-17T20:44:28.117Z","modified":"2026-06-17T02:57:47.510Z","published":"2020-09-02T16:15:12.363Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-16150"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5OSOFUD6UTGTDDSQRS62BPXDU52I6PUA/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRPBHCQKZXHVKOP5O5EWE7P76AWGUXQJ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD3NM6GD73CTFFRBKG5G2ACXGG7QQHCC/"},{"type":"WEB","url":"https://tls.mbed.org/tech-updates/security-advisories"},{"type":"WEB","url":"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1"}],"affected":[{"package":{"name":"MbedTLS_jll","ecosystem":"Julia","purl":"pkg:julia/MbedTLS_jll?uuid=c8ffd9c3-330d-5841-b78e-0817d7145fa1"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.16.8+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-202.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:L/AC:L/Au:N/C:P/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}