CVE-2019-14318

Name	CVE-2019-14318
Description	Crypto++ 8.3.0 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because scalar multiplication in ecp.cpp (prime field curves, small leakage) and algebra.cpp (binary field curves, large leakage) is not constant time and leaks the bit length of the scalar among other information.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	934326

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libcrypto++ (PTS)	jessie, jessie (lts)	5.6.1-6+deb8u3	vulnerable
	stretch	5.6.4-7	vulnerable
	buster	5.6.4-8	vulnerable
	bullseye	8.4.0-1	fixed
	bookworm	8.7.0+git220824-1	fixed
	sid, trixie	8.9.0-1.1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Debian Bugs
libcrypto++	source	experimental	8.2.0-2
libcrypto++	source	wheezy	(unfixed)	end-of-life
libcrypto++	source	(unstable)	5.6.4-9	low	934326

Notes

[buster] - libcrypto++ <no-dsa> (Minor issue)
[stretch] - libcrypto++ <no-dsa> (Minor issue)
[jessie] - libcrypto++ <no-dsa> (Minor issue)
https://github.com/weidai11/cryptopp/issues/869