medium
5
CWE
200
Advisory Published
Updated

CVE-2011-4597: Infoleak

First published: Thu Dec 15 2011(Updated: )

The SIP over UDP implementation in Asterisk Open Source 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2 uses different port numbers for responses to invalid requests depending on whether a SIP username exists, which allows remote attackers to enumerate usernames via a series of requests.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Asterisk=1.8.0
Asterisk=1.8.0-beta1
Asterisk=1.8.0-beta2
Asterisk=1.8.0-beta3
Asterisk=1.8.0-beta4
Asterisk=1.8.0-beta5
Asterisk=1.8.0-rc2
Asterisk=1.8.0-rc3
Asterisk=1.8.0-rc4
Asterisk=1.8.0-rc5
Asterisk=1.8.1
Asterisk=1.8.1-rc1
Asterisk=1.8.1.1
Asterisk=1.8.1.2
Asterisk=1.8.2
Asterisk=1.8.2.1
Asterisk=1.8.2.2
Asterisk=1.8.2.3
Asterisk=1.8.2.4
Asterisk=1.8.3
Asterisk=1.8.3-rc1
Asterisk=1.8.3-rc2
Asterisk=1.8.3-rc3
Asterisk=1.8.3.1
Asterisk=1.8.3.2
Asterisk=1.8.3.3
Asterisk=1.8.4
Asterisk=1.8.4-rc1
Asterisk=1.8.4-rc2
Asterisk=1.8.4-rc3
Asterisk=1.8.4.1
Asterisk=1.8.4.2
Asterisk=1.8.4.3
Asterisk=1.8.4.4
Asterisk=1.8.5
Asterisk=1.8.5-rc1
Asterisk=1.8.5.0
Asterisk=1.8.6.0
Asterisk=1.8.6.0-rc1
Asterisk=1.8.6.0-rc2
Asterisk=1.8.6.0-rc3
Asterisk=1.8.7.0
Asterisk=1.8.7.0-rc1
Asterisk=1.8.7.0-rc2
Asterisk=1.8.7.1
Asterisk=1.6.2.0
Asterisk=1.6.2.0-rc2
Asterisk=1.6.2.0-rc3
Asterisk=1.6.2.0-rc4
Asterisk=1.6.2.0-rc5
Asterisk=1.6.2.0-rc6
Asterisk=1.6.2.0-rc7
Asterisk=1.6.2.0-rc8
Asterisk=1.6.2.1
Asterisk=1.6.2.1-rc1
Asterisk=1.6.2.2
Asterisk=1.6.2.3-rc2
Asterisk=1.6.2.4
Asterisk=1.6.2.5
Asterisk=1.6.2.6
Asterisk=1.6.2.6-rc1
Asterisk=1.6.2.6-rc2
Asterisk=1.6.2.15-rc1
Asterisk=1.6.2.16
Asterisk=1.6.2.16-rc1
Asterisk=1.6.2.16.1
Asterisk=1.6.2.16.2
Asterisk=1.6.2.17
Asterisk=1.6.2.17-rc1
Asterisk=1.6.2.17-rc2
Asterisk=1.6.2.17-rc3
Asterisk=1.6.2.17.1
Asterisk=1.6.2.17.2
Asterisk=1.6.2.17.3
Asterisk=1.6.2.18
Asterisk=1.6.2.18-rc1
Asterisk=1.6.2.19
Asterisk=1.6.2.19-rc1
Asterisk=1.6.2.20
Asterisk=1.6.2.21
Asterisk=1.4.0
Asterisk=1.4.0-beta1
Asterisk=1.4.0-beta2
Asterisk=1.4.0-beta3
Asterisk=1.4.0-beta4
Asterisk=1.4.1
Asterisk=1.4.2
Asterisk=1.4.3
Asterisk=1.4.4
Asterisk=1.4.5
Asterisk=1.4.6
Asterisk=1.4.7
Asterisk=1.4.7.1
Asterisk=1.4.8
Asterisk=1.4.9
Asterisk=1.4.10
Asterisk=1.4.10.1
Asterisk=1.4.11
Asterisk=1.4.12
Asterisk=1.4.12.1
Asterisk=1.4.13
Asterisk=1.4.14
Asterisk=1.4.15
Asterisk=1.4.16
Asterisk=1.4.16.1
Asterisk=1.4.16.2
Asterisk=1.4.17
Asterisk=1.4.18
Asterisk=1.4.19
Asterisk=1.4.19-rc1
Asterisk=1.4.19-rc2
Asterisk=1.4.19-rc3
Asterisk=1.4.19-rc4
Asterisk=1.4.19.1
Asterisk=1.4.19.2
Asterisk=1.4.20
Asterisk=1.4.20-rc1
Asterisk=1.4.20-rc2
Asterisk=1.4.20-rc3
Asterisk=1.4.20.1
Asterisk=1.4.21
Asterisk=1.4.21-rc1
Asterisk=1.4.21-rc2
Asterisk=1.4.21.1
Asterisk=1.4.21.2
Asterisk=1.4.22
Asterisk=1.4.22-rc1
Asterisk=1.4.22-rc2
Asterisk=1.4.22-rc3
Asterisk=1.4.22-rc4
Asterisk=1.4.22-rc5
Asterisk=1.4.22.1
Asterisk=1.4.22.2
Asterisk=1.4.23
Asterisk=1.4.23-rc1
Asterisk=1.4.23-rc2
Asterisk=1.4.23-rc3
Asterisk=1.4.23-rc4
Asterisk=1.4.23.1
Asterisk=1.4.23.2
Asterisk=1.4.24
Asterisk=1.4.24-rc1
Asterisk=1.4.24.1
Asterisk=1.4.25
Asterisk=1.4.25-rc1
Asterisk=1.4.25.1
Asterisk=1.4.26
Asterisk=1.4.26-rc1
Asterisk=1.4.26-rc2
Asterisk=1.4.26-rc3
Asterisk=1.4.26-rc4
Asterisk=1.4.26-rc5
Asterisk=1.4.26-rc6
Asterisk=1.4.26.1
Asterisk=1.4.26.2
Asterisk=1.4.26.3
Asterisk=1.4.27
Asterisk=1.4.27-rc1
Asterisk=1.4.27-rc2
Asterisk=1.4.27-rc3
Asterisk=1.4.27-rc4
Asterisk=1.4.27-rc5
Asterisk=1.4.27.1
Asterisk=1.4.28
Asterisk=1.4.28-rc1
Asterisk=1.4.29
Asterisk=1.4.29-rc1
Asterisk=1.4.29.1
Asterisk=1.4.30
Asterisk=1.4.30-rc2
Asterisk=1.4.30-rc3
Asterisk=1.4.31
Asterisk=1.4.31-rc1
Asterisk=1.4.31-rc2
Asterisk=1.4.32
Asterisk=1.4.32-rc1
Asterisk=1.4.33
Asterisk=1.4.33-rc1
Asterisk=1.4.33-rc2
Asterisk=1.4.33.1
Asterisk=1.4.34
Asterisk=1.4.34-rc1
Asterisk=1.4.34-rc2
Asterisk=1.4.35
Asterisk=1.4.35-rc1
Asterisk=1.4.36
Asterisk=1.4.36-rc1
Asterisk=1.4.37
Asterisk=1.4.37-rc1
Asterisk=1.4.38
Asterisk=1.4.38-rc1
Asterisk=1.4.39
Asterisk=1.4.39-rc1
Asterisk=1.4.39.1
Asterisk=1.4.39.2
Asterisk=1.4.40
Asterisk=1.4.40-rc1
Asterisk=1.4.40-rc2
Asterisk=1.4.40-rc3
Asterisk=1.4.40.1
Asterisk=1.4.40.2
Asterisk=1.4.41
Asterisk=1.4.41-rc1
Asterisk=1.4.41.1
Asterisk=1.4.41.2
Asterisk=1.4.42
Asterisk=1.4.42-rc1
Asterisk=1.4.42-rc2

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-4597?

    CVE-2011-4597 has been classified as a high severity vulnerability allowing username enumeration through its SIP over UDP implementation.

  • How do I fix CVE-2011-4597?

    To mitigate CVE-2011-4597, upgrade to Asterisk versions 1.4.43, 1.6.2.21, or 1.8.7.2 or later.

  • What systems are affected by CVE-2011-4597?

    CVE-2011-4597 affects Asterisk Open Source versions 1.4.x before 1.4.43, 1.6.x before 1.6.2.21, and 1.8.x before 1.8.7.2.

  • What type of attack does CVE-2011-4597 allow?

    CVE-2011-4597 enables remote attackers to enumerate valid SIP usernames by sending invalid requests.

  • Can CVE-2011-4597 impact secure communication?

    Yes, CVE-2011-4597 can compromise the security of communication systems utilizing Asterisk by exposing valid usernames.

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