CVE-2011-2768

Published: Dec 23, 2011Modified: Apr 29, 2026

5.8

Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability: 8.6 / Impact: 4.9

Source: 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.

Affected (229)

Products: Tor: Tor

Tor

1 product

Tor

Configuration A

229 vulnerable

Vulnerable Software	Affected Versions
Tor Tor	Up to 0.2.2.33
Tor Tor	Version 0.0.2
Tor Tor	Version 0.0.3
Tor Tor	Version 0.0.4
Tor Tor	Version 0.0.5
Tor Tor	Version 0.0.6.1
Tor Tor	Version 0.0.6.2
Tor Tor	Version 0.0.6
Tor Tor	Version 0.0.7.1
Tor Tor	Version 0.0.7.2
Tor Tor	Version 0.0.7.3
Tor Tor	Version 0.0.7
Tor Tor	Version 0.0.8.1
Tor Tor	Version 0.0.8
Tor Tor	Version 0.0.9.10
Tor Tor	Version 0.0.9.1
Tor Tor	Version 0.0.9.2
Tor Tor	Version 0.0.9.3
Tor Tor	Version 0.0.9.4
Tor Tor	Version 0.0.9.5
Tor Tor	Version 0.0.9.6
Tor Tor	Version 0.0.9.7
Tor Tor	Version 0.0.9.8
Tor Tor	Version 0.0.9.9
Tor Tor	Version 0.0.9
Tor Tor	Version 0.1.0.10
Tor Tor	Version 0.1.0.11
Tor Tor	Version 0.1.0.12
Tor Tor	Version 0.1.0.13
Tor Tor	Version 0.1.0.14
Tor Tor	Version 0.1.0.15
Tor Tor	Version 0.1.0.16
Tor Tor	Version 0.1.0.17
Tor Tor	Version 0.1.0.18
Tor Tor	Version 0.1.0.19
Tor Tor	Version 0.1.0.1
Tor Tor	Version 0.1.0.2
Tor Tor	Version 0.1.0.3
Tor Tor	Version 0.1.0.4
Tor Tor	Version 0.1.0.5
Tor Tor	Version 0.1.0.6
Tor Tor	Version 0.1.0.7
Tor Tor	Version 0.1.0.8
Tor Tor	Version 0.1.0.9
Tor Tor	Version 0.1.1.10
Tor Tor	Version 0.1.1.10 alpha
Tor Tor	Version 0.1.1.11
Tor Tor	Version 0.1.1.12
Tor Tor	Version 0.1.1.13
Tor Tor	Version 0.1.1.14
Tor Tor	Version 0.1.1.15
Tor Tor	Version 0.1.1.16
Tor Tor	Version 0.1.1.17
Tor Tor	Version 0.1.1.18
Tor Tor	Version 0.1.1.19
Tor Tor	Version 0.1.1.1
Tor Tor	Version 0.1.1.1 alpha
Tor Tor	Version 0.1.1.20
Tor Tor	Version 0.1.1.21
Tor Tor	Version 0.1.1.22
Tor Tor	Version 0.1.1.23
Tor Tor	Version 0.1.1.25
Tor Tor	Version 0.1.1.26
Tor Tor	Version 0.1.1.2
Tor Tor	Version 0.1.1.2 alpha
Tor Tor	Version 0.1.1.3
Tor Tor	Version 0.1.1.3 alpha
Tor Tor	Version 0.1.1.4
Tor Tor	Version 0.1.1.4 alpha
Tor Tor	Version 0.1.1.5
Tor Tor	Version 0.1.1.5 alpha
Tor Tor	Version 0.1.1.6
Tor Tor	Version 0.1.1.6 alpha
Tor Tor	Version 0.1.1.7
Tor Tor	Version 0.1.1.7 alpha
Tor Tor	Version 0.1.1.8
Tor Tor	Version 0.1.1.8 alpha
Tor Tor	Version 0.1.1.9
Tor Tor	Version 0.1.1.9 alpha
Tor Tor	Version 0.1.1
Tor Tor	Version 0.1.2.10
Tor Tor	Version 0.1.2.11
Tor Tor	Version 0.1.2.12
Tor Tor	Version 0.1.2.13
Tor Tor	Version 0.1.2.14
Tor Tor	Version 0.1.2.15
Tor Tor	Version 0.1.2.16
Tor Tor	Version 0.1.2.17
Tor Tor	Version 0.1.2.18
Tor Tor	Version 0.1.2.19
Tor Tor	Version 0.1.2.1 alpha-cvs
Tor Tor	Version 0.1.2.1 alpha
Tor Tor	Version 0.1.2.2
Tor Tor	Version 0.1.2.30
Tor Tor	Version 0.1.2.31
Tor Tor	Version 0.1.2.3 alpha
Tor Tor	Version 0.1.2.4
Tor Tor	Version 0.1.2.5
Tor Tor	Version 0.1.2.5 alpha
Tor Tor	Version 0.1.2.6 alpha
Tor Tor	Version 0.1.2.7 alpha
Tor Tor	Version 0.1.2.8 beta
Tor Tor	Version 0.1.2.9
Tor Tor	Version 0.2.0.10 alpha
Tor Tor	Version 0.2.0.11 alpha
Tor Tor	Version 0.2.0.12 alpha
Tor Tor	Version 0.2.0.13 alpha
Tor Tor	Version 0.2.0.14 alpha
Tor Tor	Version 0.2.0.15 alpha
Tor Tor	Version 0.2.0.16 alpha
Tor Tor	Version 0.2.0.17 alpha
Tor Tor	Version 0.2.0.18 alpha
Tor Tor	Version 0.2.0.19 alpha
Tor Tor	Version 0.2.0.1 alpha
Tor Tor	Version 0.2.0.20 alpha
Tor Tor	Version 0.2.0.21 alpha
Tor Tor	Version 0.2.0.22 alpha
Tor Tor	Version 0.2.0.23 alpha
Tor Tor	Version 0.2.0.24 alpha
Tor Tor	Version 0.2.0.25 alpha
Tor Tor	Version 0.2.0.26 alpha
Tor Tor	Version 0.2.0.27 alpha
Tor Tor	Version 0.2.0.28 alpha
Tor Tor	Version 0.2.0.29
Tor Tor	Version 0.2.0.29 alpha
Tor Tor	Version 0.2.0.2 alpha
Tor Tor	Version 0.2.0.30
Tor Tor	Version 0.2.0.30 alpha
Tor Tor	Version 0.2.0.31
Tor Tor	Version 0.2.0.31 alpha
Tor Tor	Version 0.2.0.32 alpha
Tor Tor	Version 0.2.0.33
Tor Tor	Version 0.2.0.34 alpha
Tor Tor	Version 0.2.0.35
Tor Tor	Version 0.2.0.3 alpha
Tor Tor	Version 0.2.0.4 alpha
Tor Tor	Version 0.2.0.5 alpha
Tor Tor	Version 0.2.0.6 alpha
Tor Tor	Version 0.2.0.7 alpha
Tor Tor	Version 0.2.0.8 alpha
Tor Tor	Version 0.2.0.9 alpha
Tor Tor	Version 0.2.1.1.10 alpha
Tor Tor	Version 0.2.1.1.11 alpha
Tor Tor	Version 0.2.1.1.12
Tor Tor	Version 0.2.1.1.12 alpha
Tor Tor	Version 0.2.1.1.13
Tor Tor	Version 0.2.1.1.14
Tor Tor	Version 0.2.1.1.15
Tor Tor	Version 0.2.1.1.16
Tor Tor	Version 0.2.1.1.17
Tor Tor	Version 0.2.1.1.18
Tor Tor	Version 0.2.1.1.19
Tor Tor	Version 0.2.1.1.1 alpha
Tor Tor	Version 0.2.1.1.20
Tor Tor	Version 0.2.1.1.21
Tor Tor	Version 0.2.1.1.22
Tor Tor	Version 0.2.1.1.23
Tor Tor	Version 0.2.1.1.24
Tor Tor	Version 0.2.1.1.25
Tor Tor	Version 0.2.1.1.26
Tor Tor	Version 0.2.1.1.27
Tor Tor	Version 0.2.1.1.28
Tor Tor	Version 0.2.1.1.2 alpha
Tor Tor	Version 0.2.1.1.3 alpha
Tor Tor	Version 0.2.1.1.4 alpha
Tor Tor	Version 0.2.1.1.5 alpha
Tor Tor	Version 0.2.1.1.6 alpha
Tor Tor	Version 0.2.1.1.7 alpha
Tor Tor	Version 0.2.1.1.8 alpha
Tor Tor	Version 0.2.1.1.9 alpha
Tor Tor	Version 0.2.1.10 alpha
Tor Tor	Version 0.2.1.11 alpha
Tor Tor	Version 0.2.1.12
Tor Tor	Version 0.2.1.12 alpha
Tor Tor	Version 0.2.1.13
Tor Tor	Version 0.2.1.14
Tor Tor	Version 0.2.1.15
Tor Tor	Version 0.2.1.16
Tor Tor	Version 0.2.1.17
Tor Tor	Version 0.2.1.18
Tor Tor	Version 0.2.1.19
Tor Tor	Version 0.2.1.1 alpha
Tor Tor	Version 0.2.1.20
Tor Tor	Version 0.2.1.21
Tor Tor	Version 0.2.1.22
Tor Tor	Version 0.2.1.23
Tor Tor	Version 0.2.1.24
Tor Tor	Version 0.2.1.25
Tor Tor	Version 0.2.1.26
Tor Tor	Version 0.2.1.27
Tor Tor	Version 0.2.1.28
Tor Tor	Version 0.2.1.29
Tor Tor	Version 0.2.1.2 alpha
Tor Tor	Version 0.2.1.3 alpha
Tor Tor	Version 0.2.1.4 alpha
Tor Tor	Version 0.2.1.5 alpha
Tor Tor	Version 0.2.1.6 alpha
Tor Tor	Version 0.2.1.7 alpha
Tor Tor	Version 0.2.1.8 alpha
Tor Tor	Version 0.2.1.9 alpha
Tor Tor	Version 0.2.2.10 alpha
Tor Tor	Version 0.2.2.11 alpha
Tor Tor	Version 0.2.2.12 alpha
Tor Tor	Version 0.2.2.13 alpha
Tor Tor	Version 0.2.2.14 alpha
Tor Tor	Version 0.2.2.15 alpha
Tor Tor	Version 0.2.2.16 alpha
Tor Tor	Version 0.2.2.17 alpha
Tor Tor	Version 0.2.2.18 alpha
Tor Tor	Version 0.2.2.19 alpha
Tor Tor	Version 0.2.2.1
Tor Tor	Version 0.2.2.1 alpha
Tor Tor	Version 0.2.2.20 alpha
Tor Tor	Version 0.2.2.29
Tor Tor	Version 0.2.2.29 beta
Tor Tor	Version 0.2.2.2
Tor Tor	Version 0.2.2.2 alpha
Tor Tor	Version 0.2.2.32
Tor Tor	Version 0.2.2.3
Tor Tor	Version 0.2.2.3 alpha
Tor Tor	Version 0.2.2.4
Tor Tor	Version 0.2.2.4 alpha
Tor Tor	Version 0.2.2.5
Tor Tor	Version 0.2.2.5 alpha
Tor Tor	Version 0.2.2.6
Tor Tor	Version 0.2.2.6 alpha
Tor Tor	Version 0.2.2.7 alpha
Tor Tor	Version 0.2.2.8 alpha
Tor Tor	Version 0.2.2.9 alpha

Related CWEs

CWE-264

References (4)

http://www.debian.org/security/2011/dsa-2331

Source: cve@mitre.org

https://blog.torproject.org/blog/tor-02234-released-security-patches

Source: cve@mitre.org

PatchVendor 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

PatchVendor Advisory

Timeline

No history available yet.