CVE-2020-15522

Name	CVE-2020-15522
Description	Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
bouncycastle (PTS)	buster	1.60-1	vulnerable
	buster (security)	1.60-1+deb10u1	vulnerable
	bullseye	1.68-2	fixed
	bookworm	1.72-2	fixed
	sid, trixie	1.77-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
bouncycastle	source	(unstable)	1.68-1

[buster] - bouncycastle <no-dsa> (Minor issue)
[stretch] - bouncycastle <no-dsa> (Minor issue)
https://github.com/bcgit/bc-java/wiki/CVE-2020-15522