CVE-2011-2768

N/A Unknown
Published: December 23, 2011 Modified: April 29, 2026
View on NVD

Description

Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.debian.org/security/2011/dsa-2331
Source: af854a3a-2127-422b-91ae-364da2661108
https://blog.torproject.org/blog/tor-02234-released-security-patches
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
0.8%
51th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

tor