CVE-2017-0377

NameCVE-2017-0377
DescriptionTor 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.
SourceCVE (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 severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tor (PTS)jessie (security), jessie0.2.5.16-1fixed
stretch0.2.9.16-1fixed
stretch (security)0.2.9.15-1fixed
buster, sid0.3.5.8-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
torsource(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

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