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    CVE-2007-3763

    The IAX2 channel driver (chan_iax2) in Asterisk before 1.2.22 and 1.4.x before 1.4.8, Business Edition before B.2.2.1, AsteriskNOW before beta7, Appliance Developer Kit before 0.5.0, and s800i before 1.0.2 allows remote attackers to cause a denial of service (crash) via a crafted (1) LAGRQ or (2) LAGRP frame that contains information elements of IAX frames, which results in a NULL pointer dereference when Asterisk does not properly set an associated variable.

    Published:Jul 18, 2007
    Last Modified:Apr 23, 2026
    EPS:Jul 18, 2007
    EPSS Score:0.25182
    CVSS Score:5

    Affected Products

    Vendor
    Asterisk
    Product
    Asterisk
    Vendor
    Asterisk
    Product
    Asterisk Appliance Developer Kit
    Vendor
    Asterisk
    Product
    Asterisknow
    Vendor
    Asterisk
    Product
    S800i Appliance

    Exploits

    https://www.exploit-db.com/exploits/4249

    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://bugs.gentoo.org/show_bug.cgi?id=185713
    http://ftp.digium.com/pub/asa/ASA-2007-015.pdf
    http://secunia.com/advisories/26099
    http://secunia.com/advisories/29051
    http://security.gentoo.org/glsa/glsa-200802-11.xml
    http://www.debian.org/security/2007/dsa-1358
    http://www.novell.com/linux/security/advisories/2007_15_sr.html
    http://www.securityfocus.com/bid/24950
    http://www.securitytracker.com/id?1018407
    http://www.vupen.com/english/advisories/2007/2563
    http://bugs.gentoo.org/show_bug.cgi?id=185713
    http://ftp.digium.com/pub/asa/ASA-2007-015.pdf
    http://secunia.com/advisories/26099
    http://secunia.com/advisories/29051
    http://security.gentoo.org/glsa/glsa-200802-11.xml
    http://www.debian.org/security/2007/dsa-1358
    http://www.novell.com/linux/security/advisories/2007_15_sr.html
    http://www.securityfocus.com/bid/24950
    http://www.securitytracker.com/id?1018407
    http://www.vupen.com/english/advisories/2007/2563

    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