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Overview

Vulnerability Score 5.0 5.0
CVE Id CVE-2011-2536
Last Modified 06 Sep 2011 11:17:36
Published 06 Jul 2011 03:55:03
Confidentiality Impact PARTIAL PARTIAL
Integrity Impact NONE NONE
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity LOW
Authentication NONE

CVE-2011-2536

Summary

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.

Vulnerable Systems

Application

  • Digium Asterisk 1.4.0

  • Digium Asterisk 1.4.1

  • Digium Asterisk 1.4.10

  • Digium Asterisk 1.4.10.1

  • Digium Asterisk 1.4.11

  • Digium Asterisk 1.4.12

  • Digium Asterisk 1.4.12.1

  • Digium Asterisk 1.4.13

  • Digium Asterisk 1.4.14

  • Digium Asterisk 1.4.15

  • Digium Asterisk 1.4.16

  • Digium Asterisk 1.4.16.1

  • Digium Asterisk 1.4.16.2

  • Digium Asterisk 1.4.17

  • Digium Asterisk 1.4.18

  • Digium Asterisk 1.4.19

  • Digium Asterisk 1.4.19.1

  • Digium Asterisk 1.4.19.2

  • Digium Asterisk 1.4.2

  • Digium Asterisk 1.4.20

  • Digium Asterisk 1.4.20.1

  • Digium Asterisk 1.4.21

  • Digium Asterisk 1.4.21.1

  • Digium Asterisk 1.4.21.2

  • Digium Asterisk 1.4.22

  • Digium Asterisk 1.4.22.1

  • Digium Asterisk 1.4.22.2

  • Digium Asterisk 1.4.23

  • Digium Asterisk 1.4.23.1

  • Digium Asterisk 1.4.23.2

  • Digium Asterisk 1.4.24

  • Digium Asterisk 1.4.24.1

  • Digium Asterisk 1.4.25

  • Digium Asterisk 1.4.25.1

  • Digium Asterisk 1.4.26

  • Digium Asterisk 1.4.26.1

  • Digium Asterisk 1.4.26.2

  • Digium Asterisk 1.4.26.3

  • Digium Asterisk 1.4.27

  • Digium Asterisk 1.4.27.1

  • Digium Asterisk 1.4.28

  • Digium Asterisk 1.4.29

  • Digium Asterisk 1.4.29.1

  • Digium Asterisk 1.4.3

  • Digium Asterisk 1.4.30

  • Digium Asterisk 1.4.31

  • Digium Asterisk 1.4.32

  • Digium Asterisk 1.4.33

  • Digium Asterisk 1.4.33.1

  • Digium Asterisk 1.4.34

  • Digium Asterisk 1.4.35

  • Digium Asterisk 1.4.36

  • Digium Asterisk 1.4.37

  • Digium Asterisk 1.4.38

  • Digium Asterisk 1.4.39

  • Digium Asterisk 1.4.39.1

  • Digium Asterisk 1.4.39.2

  • Digium Asterisk 1.4.4

  • Digium Asterisk 1.4.40

  • Digium Asterisk 1.4.40.1

  • Digium Asterisk 1.4.40.2

  • Digium Asterisk 1.4.41

  • Digium Asterisk 1.4.41.1

  • Digium Asterisk 1.4.5

  • Digium Asterisk 1.4.6

  • Digium Asterisk 1.4.7

  • Digium Asterisk 1.4.7.1

  • Digium Asterisk 1.4.8

  • Digium Asterisk 1.4.9

  • Digium Asterisk 1.6.2.0

  • Digium Asterisk 1.6.2.1

  • Digium Asterisk 1.6.2.15

  • Digium Asterisk 1.6.2.16

  • Digium Asterisk 1.6.2.16.1

  • Digium Asterisk 1.6.2.16.2

  • Digium Asterisk 1.6.2.17

  • Digium Asterisk 1.6.2.17.1

  • Digium Asterisk 1.6.2.17.2

  • Digium Asterisk 1.6.2.17.3

  • Digium Asterisk 1.6.2.18

  • Digium Asterisk 1.6.2.18.1

  • Digium Asterisk 1.6.2.2

  • Digium Asterisk 1.6.2.3

  • Digium Asterisk 1.6.2.4

  • Digium Asterisk 1.6.2.5

  • Digium Asterisk 1.6.2.6

  • Digium Asterisk 1.8.0

  • Digium Asterisk 1.8.1

  • Digium Asterisk 1.8.1.1

  • Digium Asterisk 1.8.1.2

  • Digium Asterisk 1.8.2

  • Digium Asterisk 1.8.2.1

  • Digium Asterisk 1.8.2.2

  • Digium Asterisk 1.8.2.3

  • Digium Asterisk 1.8.2.4

  • Digium Asterisk 1.8.3

  • Digium Asterisk 1.8.3.1

  • Digium Asterisk 1.8.3.2

  • Digium Asterisk 1.8.3.3

  • Digium Asterisk 1.8.4

  • Digium Asterisk 1.8.4.1

  • Digium Asterisk 1.8.4.2

  • Digium Asterisk 1.8.4.3

  • Digium Asterisk C.3.0

  • Digium Asterisk C.3.1.0

  • Digium Asterisk C.3.1.1

  • Digium Asterisk C.3.2.2

  • Digium Asterisk C.3.2.3

  • Digium Asterisk C.3.3.2

  • Digium Asterisk C.3.6.2

  • Digium Asterisk C.3.6.3

  • Digium Asterisk C.3.6.4


References

CONFIRM - http://downloads.asterisk.org/pub/security/AST-2011-011-1.8.diff

SECTRACK - 1025734

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


Last Updated: 27 May 2016 10:57:02