CVE-2014-5117

Severity

57%

Complexity

86%

Confidentiality

81%

Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit after an inbound RELAY_EARLY cell is received by a client, which makes it easier for remote attackers to conduct traffic-confirmation attacks by using the pattern of RELAY and RELAY_EARLY cells as a means of communicating information about hidden service names.

Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit after an inbound RELAY_EARLY cell is received by a client, which makes it easier for remote attackers to conduct traffic-confirmation attacks by using the pattern of RELAY and RELAY_EARLY cells as a means of communicating information about hidden service names.

CVSS 2.0 Base Score 5.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N).

Overview

Type

Torproject Tor

First reported 10 years ago

2014-07-30 16:55:00

Last updated 8 years ago

2017-01-07 03:00:00

Affected Software

Torproject Tor 0.0.2

0.0.2

Torproject Tor 0.0.2pre13

0.0.2

Torproject Tor 0.0.2pre14

0.0.2

Torproject Tor 0.0.2pre15

0.0.2

Torproject Tor 0.0.2pre16

0.0.2

Torproject Tor 0.0.2pre17

0.0.2

Torproject Tor 0.0.2pre18

0.0.2

Torproject Tor 0.0.2pre19

0.0.2

Torproject Tor 0.0.2pre20

0.0.2

Torproject Tor 0.0.2pre21

0.0.2

Torproject Tor 0.0.2pre22

0.0.2

Torproject Tor 0.0.2pre23

0.0.2

Torproject Tor 0.0.2pre24

0.0.2

Torproject Tor 0.0.2pre25

0.0.2

Torproject Tor 0.0.2pre26

0.0.2

Torproject Tor 0.0.2pre27

0.0.2

Torproject Tor 0.0.3

0.0.3

Torproject Tor 0.0.4

0.0.4

Torproject Tor 0.0.5

0.0.5

Torproject Tor 0.0.6

0.0.6

Torproject Tor 0.0.6.1

0.0.6.1

Torproject Tor 0.0.6.2

0.0.6.2

Torproject Tor 0.0.7

0.0.7

Torproject Tor 0.0.7.1

0.0.7.1

Torproject Tor 0.0.7.2

0.0.7.2

Torproject Tor 0.0.7.3

0.0.7.3

Torproject Tor 0.0.8.1

0.0.8.1

Torproject Tor 0.0.9.1

0.0.9.1

Torproject Tor 0.0.9.2

0.0.9.2

Torproject Tor 0.0.9.3

0.0.9.3

Torproject Tor 0.0.9.4

0.0.9.4

Torproject Tor 0.0.9.5

0.0.9.5

Torproject Tor 0.0.9.6

0.0.9.6

Torproject Tor 0.0.9.7

0.0.9.7

Torproject Tor 0.0.9.8

0.0.9.8

Torproject Tor 0.0.9.9

0.0.9.9

Torproject Tor 0.0.9.10

0.0.9.10

Torproject Tor 0.1.0.10

0.1.0.10

Torproject Tor 0.1.0.11

0.1.0.11

Torproject Tor 0.1.0.12

0.1.0.12

Torproject Tor 0.1.0.13

0.1.0.13

Torproject Tor 0.1.0.14

0.1.0.14

Torproject Tor 0.1.0.15

0.1.0.15

Torproject Tor 0.1.0.16

0.1.0.16

Torproject Tor 0.1.0.17

0.1.0.17

Torproject Tor 0.1.1.20

0.1.1.20

Torproject Tor 0.1.1.21

0.1.1.21

Torproject Tor 0.1.1.22

0.1.1.22

Torproject Tor 0.1.1.23

0.1.1.23

Torproject Tor 0.1.1.24

0.1.1.24

Torproject Tor 0.1.1.25

0.1.1.25

Torproject Tor 0.1.1.26

0.1.1.26

Torproject Tor 0.1.2.13

0.1.2.13

Torproject Tor 0.1.2.14

0.1.2.14

Torproject Tor 0.1.2.15

0.1.2.15

Torproject Tor 0.1.2.16

0.1.2.16

Torproject Tor 0.1.2.17

0.1.2.17

Torproject Tor 0.1.2.18

0.1.2.18

Torproject Tor 0.1.2.19

0.1.2.19

Torproject Tor 0.2.0.30

0.2.0.30

Torproject Tor 0.2.0.31

0.2.0.31

Torproject Tor 0.2.0.32

0.2.0.32

Torproject Tor 0.2.0.33

0.2.0.33

Torproject Tor 0.2.0.34

0.2.0.34

Torproject Tor 0.2.0.35

0.2.0.35

Torproject Tor 0.2.2.18

0.2.2.18

Torproject Tor 0.2.2.19

0.2.2.19

Torproject Tor 0.2.2.20

0.2.2.20

Torproject Tor 0.2.2.21

0.2.2.21

Torproject Tor 0.2.2.22

0.2.2.22

Torproject Tor 0.2.2.23

0.2.2.23

Torproject Tor 0.2.2.24

0.2.2.24

Torproject Tor 0.2.2.25

0.2.2.25

Torproject Tor 0.2.2.26

0.2.2.26

Torproject Tor 0.2.2.27

0.2.2.27

Torproject Tor 0.2.2.28

0.2.2.28

Torproject Tor 0.2.2.29

0.2.2.29

Torproject Tor 0.2.2.30

0.2.2.30

Torproject Tor 0.2.2.31

0.2.2.31

Torproject Tor 0.2.2.32

0.2.2.32

Torproject Tor 0.2.2.33

0.2.2.33

Torproject Tor 0.2.2.34

0.2.2.34

Torproject Tor 0.2.2.35

0.2.2.35

Torproject Tor 0.2.2.36

0.2.2.36

Torproject Tor 0.2.2.37

0.2.2.37

Torproject Tor 0.2.2.38

0.2.2.38

Torproject Tor 0.2.3

0.2.3

Torproject Tor 0.2.3.13 Alpha

0.2.3.13

Torproject Tor 0.2.3.14 Alpha

0.2.3.14

Torproject Tor 0.2.3.15 Alpha

0.2.3.15

Torproject Tor 0.2.3.16 Alpha

0.2.3.16

Torproject Tor 0.2.3.17 Beta

0.2.3.17

Torproject Tor 0.2.3.18 Release Candidate

0.2.3.18

Torproject Tor 0.2.3.19 Release Candidate

0.2.3.19

Torproject Tor 0.2.3.20 Release Candidate

0.2.3.20

Torproject Tor 0.2.3.21 Release Candidate

0.2.3.21

Torproject Tor 0.2.3.22 Release Candidate

0.2.3.22

Torproject Tor 0.2.3.23 Release Candidate

0.2.3.23

Torproject Tor 0.2.3.24 Release Candidate

0.2.3.24

Torproject Tor 0.2.4.1 alpha

0.2.4.1

Torproject Tor 0.2.4.2 alpha

0.2.4.2

Torproject Tor 0.2.4.3 alpha

0.2.4.3

Torproject Tor 0.2.4.4 alpha

0.2.4.4

Torproject Tor 0.2.4.5 alpha

0.2.4.5

Torproject Tor 0.2.4.6 alpha

0.2.4.6

Torproject Tor 0.2.4.7 alpha

0.2.4.7

Torproject Tor 0.2.4.8 alpha

0.2.4.8

Torproject Tor 0.2.4.9 alpha

0.2.4.9

Torproject Tor 0.2.4.10 alpha

0.2.4.10

Torproject Tor 0.2.4.11 alpha

0.2.4.11

Torproject Tor 0.2.4.12 alpha

0.2.4.12

Torproject Tor 0.2.4.13 alpha

0.2.4.13

Torproject Tor 0.2.4.14 alpha

0.2.4.14

Torproject Tor 0.2.4.15 release candidate

0.2.4.15

Torproject Tor 0.2.4.16 release candidate

0.2.4.16

Torproject Tor 0.2.4.17 release candidate

0.2.4.17

Torproject Tor 0.2.4.18 release candidate

0.2.4.18

Torproject Tor 0.2.4.19

0.2.4.19

Torproject Tor 0.2.4.20

0.2.4.20

Torproject Tor 0.2.5.2 alpha

0.2.5.2

Torproject Tor 0.2.5.3 alpha

0.2.5.3

Torproject Tor 0.2.5.4 alpha

0.2.5.4

Torproject Tor 0.2.5.5 alpha

0.2.5.5

References

60084

60647

https://blog.torproject.org/blog/tor-security-advisory-relay-early-traffic-confirmation-attack

[tor-announce] 20140730 Tor 0.2.4.23 is released

[tor-announce] 20140730 Tor security advisory: "relay early" traffic confirmation attack

Vendor Advisory

[tor-talk] 20140730 Tor 0.2.5.6-alpha is out

https://trac.torproject.org/projects/tor/ticket/1038

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