CVE-2011-2666

Severity

50%

Complexity

99%

Confidentiality

48%

The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536.

The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536.

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N).

Overview

Type

Digium Asterisk

First reported 13 years ago

2011-07-06 19:55:00

Last updated 7 years ago

2017-08-29 01:29:00

Affected Software

Digium Asterisk 1.6.2.0

1.6.2.0

Digium Asterisk 1.6.2.0 release candidate 2

1.6.2.0

Digium Asterisk 1.6.2.0 release candidate 3

1.6.2.0

Digium Asterisk 1.6.2.0 release candidate 4

1.6.2.0

Digium Asterisk 1.6.2.0 release candidate 5

1.6.2.0

Digium Asterisk 1.6.2.0 release candidate 6

1.6.2.0

Digium Asterisk 1.6.2.0 release candidate 7

1.6.2.0

Digium Asterisk 1.6.2.0 release candidate 8

1.6.2.0

Digium Asterisk 1.6.2.1

1.6.2.1

Digium Asterisk 1.6.2.1 release candidate 1

1.6.2.1

Digium Asterisk 1.6.2.2

1.6.2.2

Digium Asterisk 1.6.2.3 release candidate 2

1.6.2.3

Digium Asterisk 1.6.2.4

1.6.2.4

Digium Asterisk 1.6.2.5

1.6.2.5

Digium Asterisk 1.6.2.6

1.6.2.6

Digium Asterisk 1.6.2.6 release candidate 1

1.6.2.6

Digium Asterisk 1.6.2.6 release candidate 2

1.6.2.6

Digium Asterisk 1.6.2.15 Release Candidate 1

1.6.2.15

Digium Asterisk 1.6.2.16

1.6.2.16

Digium Asterisk 1.6.2.16 Release Candidate 1

1.6.2.16

Digium Asterisk 1.6.2.16.1

1.6.2.16.1

Digium Asterisk 1.6.2.16.2

1.6.2.16.2

Digium Asterisk 1.6.2.17

1.6.2.17

Digium Asterisk 1.6.2.17 Release Candidate 1

1.6.2.17

Digium Asterisk 1.6.2.17 Release Candidate 2

1.6.2.17

Digium Asterisk 1.6.2.17 Release Candidate 3

1.6.2.17

Digium Asterisk 1.6.2.17.1

1.6.2.17.1

Digium Asterisk 1.6.2.17.2

1.6.2.17.2

Digium Asterisk 1.6.2.17.3

1.6.2.17.3

Digium Asterisk 1.6.2.18

1.6.2.18

Digium Asterisk 1.6.2.18 Release Candidate 1

1.6.2.18

Digium Asterisk 1.6.2.18.1

1.6.2.18.1

Digium Asterisk 1.6.2.18.2

1.6.2.18.2

Digium Asterisk 1.4.0

1.4.0

Digium Asterisk 1.4.0 beta1

1.4.0

Digium Asterisk 1.4.0 beta2

1.4.0

Digium Asterisk 1.4.0 beta3

1.4.0

Digium Asterisk 1.4.0 beta4

1.4.0

Digium Asterisk 1.4.1

1.4.1

Digium Asterisk 1.4.2

1.4.2

Digium Asterisk 1.4.3

1.4.3

Digium Asterisk 1.4.4

1.4.4

Digium Asterisk 1.4.5

1.4.5

Digium Asterisk 1.4.6

1.4.6

Digium Asterisk 1.4.7

1.4.7

Digium Asterisk 1.4.7.1

1.4.7.1

Digium Asterisk 1.4.8

1.4.8

Digium Asterisk 1.4.9

1.4.9

Digium Asterisk 1.4.10

1.4.10

Digium Asterisk 1.4.10.1

1.4.10.1

Digium Asterisk 1.4.11

1.4.11

Digium Asterisk 1.4.12

1.4.12

Digium Asterisk 1.4.12.1

1.4.12.1

Digium Asterisk 1.4.13

1.4.13

Digium Asterisk 1.4.14

1.4.14

Digium Asterisk 1.4.15

1.4.15

Digium Asterisk 1.4.16

1.4.16

Digium Asterisk 1.4.16.1

1.4.16.1

Digium Asterisk 1.4.16.2

1.4.16.2

Digium Asterisk 1.4.17

1.4.17

Digium Asterisk 1.4.18

1.4.18

Digium Asterisk 1.4.19

1.4.19

Digium Asterisk 1.4.19 release candidate 1

1.4.19

Digium Asterisk 1.4.19 release candidate 2

1.4.19

Digium Asterisk 1.4.19 release candidate 3

1.4.19

Digium Asterisk 1.4.19 release candidate 4

1.4.19

Digium Asterisk 1.4.19.1

1.4.19.1

Digium Asterisk 1.4.19.2

1.4.19.2

Digium Asterisk 1.4.20

1.4.20

Digium Asterisk 1.4.20 release candidate 1

1.4.20

Digium Asterisk 1.4.20 release candidate 2

1.4.20

Digium Asterisk 1.4.20 release candidate 3

1.4.20

Digium Asterisk 1.4.20.1

1.4.20.1

Digium Asterisk 1.4.21

1.4.21

Digium Asterisk 1.4.21 release candidate 1

1.4.21

Digium Asterisk 1.4.21 release candidate 2

1.4.21

Digium Asterisk 1.4.21.1

1.4.21.1

Digium Asterisk 1.4.21.2

1.4.21.2

Digium Asterisk 1.4.22

1.4.22

Digium Asterisk 1.4.22 release candidate 1

1.4.22

Digium Asterisk 1.4.22 release candidate 2

1.4.22

Digium Asterisk 1.4.22 release candidate 3

1.4.22

Digium Asterisk 1.4.22 release candidate 4

1.4.22

Digium Asterisk 1.4.22 release candidate 5

1.4.22

Digium Asterisk 1.4.22.1

1.4.22.1

Digium Asterisk 1.4.22.2

1.4.22.2

Digium Asterisk 1.4.23

1.4.23

Digium Asterisk 1.4.23 release candidate 1

1.4.23

Digium Asterisk 1.4.23 release candidate 2

1.4.23

Digium Asterisk 1.4.23 release candidate 3

1.4.23

Digium Asterisk 1.4.23 release candidate 4

1.4.23

Digium Asterisk 1.4.23.1

1.4.23.1

Digium Asterisk 1.4.23.2

1.4.23.2

Digium Asterisk 1.4.24

1.4.24

Digium Asterisk 1.4.24 release candidate 1

1.4.24

Digium Asterisk 1.4.24.1

1.4.24.1

Digium Asterisk 1.4.25

1.4.25

Digium Asterisk 1.4.25 release candidate 1

1.4.25

Digium Asterisk 1.4.25.1

1.4.25.1

Digium Asterisk 1.4.26

1.4.26

Digium Asterisk 1.4.26 release candidate 1

1.4.26

Digium Asterisk 1.4.26 release candidate 2

1.4.26

Digium Asterisk 1.4.26 release candidate 3

1.4.26

Digium Asterisk 1.4.26 release candidate 4

1.4.26

Digium Asterisk 1.4.26 release candidate 5

1.4.26

Digium Asterisk 1.4.26 release candidate 6

1.4.26

Digium Asterisk 1.4.26.1

1.4.26.1

Digium Asterisk 1.4.26.2

1.4.26.2

Digium Asterisk 1.4.26.3

1.4.26.3

Digium Asterisk 1.4.27

1.4.27

Digium Asterisk 1.4.27 release candidate 1

1.4.27

Digium Asterisk 1.4.27 release candidate 2

1.4.27

Digium Asterisk 1.4.27 release candidate 3

1.4.27

Digium Asterisk 1.4.27 release candidate 4

1.4.27

Digium Asterisk 1.4.27 release candidate 5

1.4.27

Digium Asterisk 1.4.27.1

1.4.27.1

Digium Asterisk 1.4.28

1.4.28

Digium Asterisk 1.4.28 Release Candidate 1

1.4.28

Digium Asterisk 1.4.29

1.4.29

Digium Asterisk 1.4.29 Release Candidate 1

1.4.29

Digium Asterisk 1.4.29.1

1.4.29.1

Digium Asterisk 1.4.30

1.4.30

Digium Asterisk 1.4.30 Release Candidate 2

1.4.30

Digium Asterisk 1.4.30 Release Candidate 3

1.4.30

Digium Asterisk 1.4.31

1.4.31

Digium Asterisk 1.4.31 Release Candidate 1

1.4.31

Digium Asterisk 1.4.31 Release Candidate 2

1.4.31

Digium Asterisk 1.4.32

1.4.32

Digium Asterisk 1.4.32 Release Candidate 1

1.4.32

Digium Asterisk 1.4.33

1.4.33

Digium Asterisk 1.4.33 Release Candidate 1

1.4.33

Digium Asterisk 1.4.33 Release Candidate 2

1.4.33

Digium Asterisk 1.4.33.1

1.4.33.1

Digium Asterisk 1.4.34

1.4.34

Digium Asterisk 1.4.34 Release Candidate 1

1.4.34

Digium Asterisk 1.4.34 Release Candidate 2

1.4.34

Digium Asterisk 1.4.35

1.4.35

Digium Asterisk 1.4.35 Release Candidate 1

1.4.35

Digium Asterisk 1.4.36

1.4.36

Digium Asterisk 1.4.36 Release Candidate 1

1.4.36

Digium Asterisk 1.4.37

1.4.37

Digium Asterisk 1.4.37 Release Candidate 1

1.4.37

Digium Asterisk 1.4.38

1.4.38

Digium Asterisk 1.4.38 Release Candidate 1

1.4.38

Digium Asterisk 1.4.39

1.4.39

Digium Asterisk 1.4.39 Release Candidate 1

1.4.39

Digium Asterisk 1.4.39.1

1.4.39.1

Digium Asterisk 1.4.39.2

1.4.39.2

Digium Asterisk 1.4.40

1.4.40

Digium Asterisk 1.4.40 Release Candidate 1

1.4.40

Digium Asterisk 1.4.40 Release Candidate 2

1.4.40

Digium Asterisk 1.4.40 Release Candidate 3

1.4.40

Digium Asterisk 1.4.40.1

1.4.40.1

Digium Asterisk 1.4.40.2

1.4.40.2

Digium Asterisk 1.4.41

1.4.41

Digium Asterisk 1.4.41 Release Candidate 1

1.4.41

Digium Asterisk 1.4.41.1

1.4.41.1

Digium Asterisk 1.4.41.2

1.4.41.2

References

http://downloads.asterisk.org/pub/security/AST-2011-011.html

Vendor Advisory

asterisk-sip-channel-info-disclosure(68472)

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