Home/CVE/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
CVE

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

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.

HIGH · CVSS 7.5 EPSS 0.00476
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
▤

Affected Products & Versions

1
torproject torall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · security@debian.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Jul 2017 · 03:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2024:11469-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://blog.torproject.org/blog/tor-0309-released-security-update-clientsRelease NotesVendor Advisory
https://blog.torproject.org/blog/tor-0314-alpha-released-security-update-clientsRelease NotesVendor Advisory
https://github.com/torproject/tor/commit/665baf5ed5c6186d973c46cdea165c0548027350PatchThird Party Advisory
https://security-tracker.debian.org/CVE-2017-0377Third Party Advisory
https://trac.torproject.org/projects/tor/ticket/22753Issue TrackingVendor Advisory
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