CVE-2019-16910

Name	CVE-2019-16910
Description	Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3249-1
Debian Bugs	941265

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mbedtls (PTS)	stretch (security), stretch (lts), stretch	2.4.2-1+deb9u4	vulnerable
	buster (security), buster, buster (lts)	2.16.9-0~deb10u1	fixed
	bullseye	2.16.9-0.1	fixed
	bookworm	2.28.3-1	fixed
	trixie	2.28.8-1	fixed
	sid	3.6.2-3	fixed
polarssl (PTS)	jessie, jessie (lts)	1.3.9-2.1+deb8u4	vulnerable

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)	2.16.3-1			941265
polarssl	source	wheezy	(unfixed)	end-of-life
polarssl	source	(unstable)	(unfixed)

Notes

[stretch] - mbedtls <no-dsa> (Minor issue)
[jessie] - polarssl <no-dsa> (Minor issue, backport intrusive because of API changes)
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-10
https://github.com/ARMmbed/mbedtls/commit/298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd (2.7.12)
https://github.com/ARMmbed/mbedtls/commit/33f66ba6fd234114aa37f0209dac031bb2870a9b (2.16.3)