CVE-2020-16150

Name	CVE-2020-16150
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3249-1
Debian Bugs	972806

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mbedtls (PTS)	bullseye	2.16.9-0.1	fixed
	bullseye (security)	2.16.9-0.1+deb11u3	fixed
	bookworm	2.28.3-1	fixed
	forky, sid, trixie	3.6.4-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mbedtls	source	buster	2.16.9-0~deb10u1		DLA-3249-1
mbedtls	source	(unstable)	2.16.9-0.1			972806

[stretch] - mbedtls <no-dsa> (Minor issue)
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1