Asterisk POKE denial of service

asterisk-poke-dos (43942) The risk level is classified as LowLow Risk

Description:

Asterisk is vulnerable to a denial of service, caused by the improper handling of IAX2 POKE requests. By sending a flood of IAX2 POKE requests missing an ACK packet in response to the PONG packet, a remote attacker could exploit this vulnerability to consume all IAX2 call numbers resulting in a denial of service.

Platforms Affected:

  • Digium, Asterisk Business Edition B.1.3.2
  • Digium, Asterisk Business Edition B.1.3.3
  • Digium, Asterisk Business Edition B.2.2.0
  • Digium, Asterisk Business Edition B.2.2.1
  • Digium, Asterisk Business Edition B.2.3.1
  • Digium, Asterisk Business Edition B.2.3.2
  • Digium, Asterisk Business Edition B.2.3.3
  • Digium, Asterisk Business Edition B.2.3.4
  • Digium, Asterisk Business Edition B.2.5.1
  • Digium, Asterisk Business Edition B.2.5.2
  • Digium, Asterisk Business Edition C.1.0 Beta7
  • Digium, Asterisk Business Edition C.1.0 Beta8
  • Digium, Asterisk Business Edition C.1.6.1
  • Digium, Asterisk Open Source 0.1.0
  • Digium, Asterisk Open Source 0.1.1
  • Digium, Asterisk Open Source 0.1.10
  • Digium, Asterisk Open Source 0.1.11
  • Digium, Asterisk Open Source 0.1.12
  • Digium, Asterisk Open Source 0.1.2
  • Digium, Asterisk Open Source 0.1.3
  • Digium, Asterisk Open Source 0.1.4
  • Digium, Asterisk Open Source 0.1.5
  • Digium, Asterisk Open Source 0.1.6
  • Digium, Asterisk Open Source 0.1.7
  • Digium, Asterisk Open Source 0.1.8
  • Digium, Asterisk Open Source 0.1.9
  • Digium, Asterisk Open Source 0.1.9_1
  • Digium, Asterisk Open Source 0.2
  • Digium, Asterisk Open Source 0.3
  • Digium, Asterisk Open Source 0.4
  • Digium, Asterisk Open Source 0.5.0
  • Digium, Asterisk Open Source 0.7.0
  • Digium, Asterisk Open Source 0.7.1
  • Digium, Asterisk Open Source 0.7.2
  • Digium, Asterisk Open Source 0.9.0
  • Digium, Asterisk Open Source 1.0 RC1
  • Digium, Asterisk Open Source 1.0
  • Digium, Asterisk Open Source 1.0.1
  • Digium, Asterisk Open Source 1.0.10
  • Digium, Asterisk Open Source 1.0.11
  • Digium, Asterisk Open Source 1.0.11.1
  • Digium, Asterisk Open Source 1.0.12
  • Digium, Asterisk Open Source 1.0.2
  • Digium, Asterisk Open Source 1.0.3
  • Digium, Asterisk Open Source 1.0.4
  • Digium, Asterisk Open Source 1.0.5
  • Digium, Asterisk Open Source 1.0.6
  • Digium, Asterisk Open Source 1.0.7
  • Digium, Asterisk Open Source 1.0.8
  • Digium, Asterisk Open Source 1.0.9
  • Digium, Asterisk Open Source 1.2.0 Beta1
  • Digium, Asterisk Open Source 1.2.0 Beta2
  • Digium, Asterisk Open Source 1.2.1
  • Digium, Asterisk Open Source 1.2.10
  • Digium, Asterisk Open Source 1.2.11
  • Digium, Asterisk Open Source 1.2.12
  • Digium, Asterisk Open Source 1.2.13
  • Digium, Asterisk Open Source 1.2.14
  • Digium, Asterisk Open Source 1.2.15
  • Digium, Asterisk Open Source 1.2.16
  • Digium, Asterisk Open Source 1.2.17
  • Digium, Asterisk Open Source 1.2.18
  • Digium, Asterisk Open Source 1.2.19
  • Digium, Asterisk Open Source 1.2.2
  • Digium, Asterisk Open Source 1.2.20
  • Digium, Asterisk Open Source 1.2.21
  • Digium, Asterisk Open Source 1.2.22
  • Digium, Asterisk Open Source 1.2.23
  • Digium, Asterisk Open Source 1.2.24
  • Digium, Asterisk Open Source 1.2.25
  • Digium, Asterisk Open Source 1.2.26
  • Digium, Asterisk Open Source 1.2.26.1
  • Digium, Asterisk Open Source 1.2.26.2
  • Digium, Asterisk Open Source 1.2.27
  • Digium, Asterisk Open Source 1.2.28
  • Digium, Asterisk Open Source 1.2.28.1
  • Digium, Asterisk Open Source 1.2.29
  • Digium, Asterisk Open Source 1.2.3
  • Digium, Asterisk Open Source 1.2.30
  • Digium, Asterisk Open Source 1.2.4
  • Digium, Asterisk Open Source 1.2.5
  • Digium, Asterisk Open Source 1.2.6
  • Digium, Asterisk Open Source 1.2.7
  • Digium, Asterisk Open Source 1.2.7.1
  • Digium, Asterisk Open Source 1.2.8
  • Digium, Asterisk Open Source 1.2.9
  • Digium, Asterisk Open Source 1.2.9.1
  • Digium, Asterisk Open Source 1.4 Beta
  • Digium, Asterisk Open Source 1.4.1
  • Digium, Asterisk Open Source 1.4.10
  • Digium, Asterisk Open Source 1.4.11
  • Digium, Asterisk Open Source 1.4.12
  • Digium, Asterisk Open Source 1.4.13
  • Digium, Asterisk Open Source 1.4.14
  • Digium, Asterisk Open Source 1.4.15
  • Digium, Asterisk Open Source 1.4.16
  • Digium, Asterisk Open Source 1.4.16.1
  • Digium, Asterisk Open Source 1.4.16.2
  • Digium, Asterisk Open Source 1.4.17
  • Digium, Asterisk Open Source 1.4.18
  • Digium, Asterisk Open Source 1.4.18.1
  • Digium, Asterisk Open Source 1.4.19
  • Digium, Asterisk Open Source 1.4.2
  • Digium, Asterisk Open Source 1.4.3
  • Digium, Asterisk Open Source 1.4.4
  • Digium, Asterisk Open Source 1.4.4_2007-04-27
  • Digium, Asterisk Open Source 1.4.5
  • Digium, Asterisk Open Source 1.4.6
  • Digium, Asterisk Open Source 1.4.7
  • Digium, Asterisk Open Source 1.4.8
  • Digium, Asterisk Open Source 1.4.9
  • Digium, Asterisk Open Source 1.4_revision_95946
  • Digium, Asterisk Open Source 1.6
  • Digium, Asterisk Open Source A
  • Digium, Asterisk Open Source B.1.3.2
  • Digium, Asterisk Open Source B.1.3.3
  • Digium, Asterisk Open Source B.2.2.0
  • Gentoo, Linux

Remedy:

Refer to AST-2008-010 for patch, upgrade or suggested workaround information. See References.

Consequences:

Denial of Service

References:

  • AST-2008-010, Asterisk IAX 'POKE' resource exhaustion at http://downloads.digium.com/pub/security/AST-2008-010.html.
  • Asterisk Web site, Asterisk :: The Open Source PBX & Telephony Platform at http://www.asterisk.org/.
  • BID-30321: Asterisk IAX 'POKE' Requests Remote Denial of Service Vulnerability
  • CVE-2008-3263: The IAX2 protocol implementation in Asterisk Open Source 1.0.x, 1.2.x before 1.2.30, and 1.4.x before 1.4.21.2; Business Edition A.x.x, B.x.x before B.2.5.4, and C.x.x before C.1.10.3; AsteriskNOW; Appliance Developer Kit 0.x.x; and s800i 1.0.x before 1.2.0.1 allows remote attackers to cause a denial of service (call-number exhaustion and CPU consumption) by quickly sending a large number of IAX2 (IAX) POKE requests.
  • GLSA-200905-01: Asterisk: Multiple vulnerabilities
  • SA31178: Asterisk Two Denial of Service Vulnerabilities
  • SECTRACK ID: 1020535: Asterisk IAX2 Poke Packet Processing Lets Remote Users Deny Service
  • VUPEN/ADV-2008-2168: Asterisk Products Multiple Remote Denial of Service Vulnerabilities

Reported:

Jul 21, 2008

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