CVE-2017-0377

Name	CVE-2017-0377
Description	Tor 0.3.x before 0.3.0.9 has a guard-selection algorithm that only considers the exit relay (not the exit relay's family), which might allow remote attackers to defeat intended anonymity properties by leveraging the existence of large families.
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
tor (PTS)	stretch	0.2.9.16-1	fixed
	stretch (security)	0.2.9.15-1	fixed
	buster, buster (security)	0.3.5.14-1	fixed
	bullseye, sid	0.4.5.7-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
tor	source	(unstable)	(not affected)

Notes

- tor <not-affected> (Affects only 0.3.x series)
https://trac.torproject.org/projects/tor/ticket/22753
https://blog.torproject.org/blog/tor-0309-released-security-update-clients