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 advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
freeradius (PTS)	buster	3.0.17+dfsg-1.1+deb10u1	fixed
	bullseye	3.0.21+dfsg-2.2+deb11u1	fixed
	bookworm, sid	3.2.1+dfsg-1	fixed

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

Package	Type	Release	Fixed Version
freeradius	source	jessie	(not affected)
freeradius	source	buster	3.0.17+dfsg-1.1+deb10u1
freeradius	source	(unstable)	3.0.20+dfsg-1

Notes

[stretch] - freeradius <no-dsa> (Minor issue)
[jessie] - freeradius <not-affected> (Vulnerable code not present; EAP-pwd module introduced in later version)
https://github.com/FreeRADIUS/freeradius-server/commit/6b522f8780813726799e6b8cf0f1f8e0ce2c8ebf