Asterisk ConfBridge State Transitions DoS (AST-2014-014)

Medium Nessus Plugin ID 79440

Synopsis

A telephony application running on the remote host is affected by a denial of service vulnerability.

Description

According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by a denial of service vulnerability. This flaw exists due to improper handling of state transitions which could allow a remote attacker to crash the application.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Asterisk 11.14.1 / 11.6-cert8 or apply the appropriate patch listed in the Asterisk advisory.

See Also

http://downloads.asterisk.org/pub/security/AST-2014-014.html

https://issues.asterisk.org/jira/browse/ASTERISK-24440

Plugin Details

Severity: Medium

ID: 79440

File Name: asterisk_ast_2014_014.nasl

Version: 1.8

Type: remote

Family: Misc.

Published: 2014/11/25

Updated: 2018/06/27

Dependencies: 63202

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: asterisk/sip_detected, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2014/11/20

Vulnerability Publication Date: 2014/11/20

Reference Information

CVE: CVE-2014-8414

BID: 71222