CVE-2019-17185

Name	CVE-2019-17185
Description	In FreeRADIUS 3.0.x before 3.0.20, the EAP-pwd module used a global OpenSSL BN_CTX instance to handle all handshakes. This mean multiple threads use the same BN_CTX instance concurrently, resulting in crashes when concurrent EAP-pwd handshakes are initiated. This can be abused by an adversary as a Denial-of-Service (DoS) attack.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
freeradius (PTS)	jessie (security), jessie	2.2.5+dfsg-0.2+deb8u1	fixed
	stretch (security), stretch	3.0.12+dfsg-5+deb9u1	vulnerable
	buster	3.0.17+dfsg-1.1	vulnerable
	bullseye, sid	3.0.20+dfsg-3	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
freeradius	source	(unstable)	3.0.20+dfsg-1
freeradius	source	jessie	(not affected)

Notes

[jessie] - freeradius <not-affected> (Vulnerable code not present; EAP-pwd module introduced in later version)
https://github.com/FreeRADIUS/freeradius-server/commit/6b522f8780813726799e6b8cf0f1f8e0ce2c8ebf