CVEvulnerability

CVE-2007-4103

7.5 HIGH Published 2007-07-31 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2007-07-31
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-772

Description

The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.

Affected configurations

• digium asterisk (>= 1.2.20 < 1.2.23) • digium asterisk (>= 1.4.0 < 1.4.9) • digium asterisk appliance developer kit (< 0.6.0)

Related

Weakness · CWE (1)

  • CWE-772 Missing Release of Resource after Effective Lifetime weakness

Referenced by CWE · observed example (2)

  • CWE-400 Uncontrolled Resource Consumption weakness
  • CWE-772 Missing Release of Resource after Effective Lifetime weakness

References