CVE-2017-0377

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.

• CWE-200

• https://blog.torproject.org/blog/tor-0309-released-security-update-clientsRelease Notes, Vendor Advisory
• https://blog.torproject.org/blog/tor-0314-alpha-released-security-update-clientsRelease Notes, Vendor Advisory
• https://github.com/torproject/tor/commit/665baf5ed5c6186d973c46cdea165c0548027350Patch, Third Party Advisory
• https://security-tracker.debian.org/CVE-2017-0377Third Party Advisory
• https://trac.torproject.org/projects/tor/ticket/22753Issue Tracking, Vendor Advisory
• https://blog.torproject.org/blog/tor-0309-released-security-update-clientsRelease Notes, Vendor Advisory
• https://blog.torproject.org/blog/tor-0314-alpha-released-security-update-clientsRelease Notes, Vendor Advisory
• https://github.com/torproject/tor/commit/665baf5ed5c6186d973c46cdea165c0548027350Patch, Third Party Advisory
• https://security-tracker.debian.org/CVE-2017-0377Third Party Advisory
• https://trac.torproject.org/projects/tor/ticket/22753Issue Tracking, Vendor Advisory

Published

Jul 2, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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