Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2008-1923

Severity CVSS v4.0:
Pending analysis
Type:
CWE-16 Configuration Errors
Publication date:
23/04/2008
Last modified:
09/04/2025

Description

The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends "early audio" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.10
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:* b2.5.1 (including)
cpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:* c1.8.0 (including)
cpe:2.3:a:asterisk:asterisk_business_edition:a:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.3:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.1:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.2:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.3:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.4:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:b.2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0-beta7:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0-beta8:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools