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.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 3.9
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

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

References:

  • AST-2008-010: Asterisk IAX 'POKE' resource exhaustion.
  • Asterisk Web site: Asterisk :: The Open Source PBX & Telephony Platform .
  • 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

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
  • Digium Asterisk Open Source 1.0 RC1
  • 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

Reported:

Jul 21, 2008

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Internet Security Systems

IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.