CVE-2020-8516
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 Medium
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
56.9%
The daemon in Tor through 0.4.1.8 and 0.4.2.x through 0.4.2.6 does not verify that a rendezvous node is known before attempting to connect to it, which might make it easier for remote attackers to discover circuit information. NOTE: The network team of Tor claims this is an intended behavior and not a vulnerability
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| torproject:tor | torproject tor | le | 0.4.1.8 |
| torproject:tor | torproject tor | le | 0.4.2.6 |
References
lists.torproject.org/pipermail/tor-dev/2020-February/014146.html
lists.torproject.org/pipermail/tor-dev/2020-February/014147.html
security-tracker.debian.org/tracker/CVE-2020-8516
trac.torproject.org/projects/tor/ticket/33129
www.hackerfactor.com/blog/index.php?/archives/868-Deanonymizing-Tor-Circuits.html
Social References
More
Related
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 Medium
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
56.9%