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    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.

    Published:Jul 22, 2008
    Last Modified:Apr 23, 2026
    EPS:Jul 22, 2008
    EPSS Score:0.36096
    CVSS Score:7.8

    Affected Products

    Vendor
    Asterisk
    Product
    Asterisk

    Exploits

    http://downloads.securityfocus.com/vulnerabilities/exploits/30321.plhttp://www.securityfocus.com/bid/30321http://downloads.securityfocus.com/vulnerabilities/exploits/30321.plhttp://www.securityfocus.com/bid/30321https://www.exploit-db.com/exploits/32095

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-23741 (CVSS 0) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2026-23740 (CVSS 0) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2026-23739 (CVSS 2) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2026-23738 (CVSS 3.5) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.…
    CVE-2025-69205 (CVSS 6.3) — Micro Registration Utility (µURU) is a telephone self registration utility based on asterisk. In versions up t…
    CVE-2025-1131 (CVSS 7) — A local privilege escalation vulnerability exists in the safe_asterisk script included with the Asterisk toolk…
    CVE-2025-57767 (CVSS 7.5) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, …
    CVE-2025-54995 (CVSS 6.5) — Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 18.26.4 and 18.9-c…
    CVE-2025-49832 (CVSS 6.5) — Asterisk is an open source private branch exchange and telephony toolkit. In versions up to and including 18.2…
    CVE-2025-47780 (CVSS 4.8) — Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and 22.4…

    References

    http://downloads.digium.com/pub/security/AST-2008-010.html
    http://downloads.securityfocus.com/vulnerabilities/exploits/30321.pl
    http://secunia.com/advisories/31178
    http://secunia.com/advisories/31194
    http://secunia.com/advisories/34982
    http://security.gentoo.org/glsa/glsa-200905-01.xml
    http://www.securityfocus.com/archive/1/494675/100/0/threaded
    http://www.securityfocus.com/bid/30321
    http://www.securitytracker.com/id?1020535
    http://www.vupen.com/english/advisories/2008/2168/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/43942
    https://www.redhat.com/archives/fedora-package-announce/2008-July/msg00839.html
    http://downloads.digium.com/pub/security/AST-2008-010.html
    http://downloads.securityfocus.com/vulnerabilities/exploits/30321.pl
    http://secunia.com/advisories/31178
    http://secunia.com/advisories/31194
    http://secunia.com/advisories/34982
    http://security.gentoo.org/glsa/glsa-200905-01.xml
    http://www.securityfocus.com/archive/1/494675/100/0/threaded
    http://www.securityfocus.com/bid/30321
    http://www.securitytracker.com/id?1020535
    http://www.vupen.com/english/advisories/2008/2168/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/43942
    https://www.redhat.com/archives/fedora-package-announce/2008-July/msg00839.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High