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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://trac.torproject.org/projects/tor/ticket/22753	Issue Tracking Vendor Advisory
https://security-tracker.debian.org/CVE-2017-0377	Third Party Advisory
https://github.com/torproject/tor/commit/665baf5ed5c6186d973c46cdea165c0548027350	Patch Third Party Advisory
https://blog.torproject.org/blog/tor-0314-alpha-released-security-update-clients	Release Notes Vendor Advisory
https://blog.torproject.org/blog/tor-0309-released-security-update-clients	Release Notes Vendor Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:torproject:tor:0.3.0.5:::::::*
	cpe:2.3:a:torproject:tor:0.3.0.4:::::::*
	cpe:2.3:a:torproject:tor:0.3.0.3:alpha::::::
	cpe:2.3:a:torproject:tor:0.3.0.2:alpha::::::
	cpe:2.3:a:torproject:tor:0.3.0.8:::::::*
	cpe:2.3:a:torproject:tor:0.3.0.6:::::::*
	cpe:2.3:a:torproject:tor:0.3.0.1:alpha::::::
	cpe:2.3:a:torproject:tor:0.3.0.7:::::::*

Information

Published : 2017-07-02 08:29

Updated : 2017-07-14 07:21

NVD link : CVE-2017-0377

Mitre link : CVE-2017-0377

JSON object : View

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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Products Affected

torproject

tor

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