NASLDB: Asterisk IAX2 (IAX) POKE Request Saturation Resource Exhaustion Remote DoS
General
ID: 33576
Name: Asterisk IAX2 (IAX) POKE Request Saturation Resource Exhaustion Remote DoS
Summary: Sends a POKE and examines src callno in the PONG
Credits: Tenable Network Security, Inc.
Classification
Risk: –
CVSS: –
CVSS Base Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Temporal Vector: CVSS2#E:F/RL:OF/RC:C
Port: –
Family: Denial of Service
Type: Remote
Description
The version of Asterisk installed on the remote host consumes an IAX2
call number while waiting for an ACK packet in response to a PONG
packet. By flooding the affected service with POKE requests, an
unauthenticated, remote attacker can leverage this issue to exhaust all
available call numbers and prevent legitimate IAX2 calls from getting
through.
Exploiting
Exploit Available: True
Exploitability Ease: Exploits are available
Sources
CVE: CVE-2008-3263
OSVDB: –
Bugtraq: –
scipID: –
Timeline
Vulnerability Disclosure: –
Patch Release: –
Plugin Release: 2008/07/25
Plugin
Version: 1.13
Filename: asterisk_iax2_poke_exhaust.nasl
Filesize: 4262 bytes
MD5 Hash: e6552202200d92f12ff6ed32799fd8fe
Identification: Services/udp/iax2
Require Keys: Services/udp/iax2
Dependencies: "iax2_detection.nasl"
Copyright: This script is Copyright© 2008-2011 Tenable Network Security, Inc.
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