Asterisk ReceiveFax Dialplan Application Remote DoS (AST-2014-010)

medium Nessus Plugin ID 77859

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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 in the ReceiveFax Dialplan application. This is due to a flaw in the 'res_fax_spandsp' module, which is caused by the improper handling of out-of-call messages. By using a specially crafted request, a remote attacker could exploit this 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 11.12.1 / 12.5.1 / 11.6-cert6 or apply the appropriate patch listed in the Asterisk advisory.

Plugin Details

Severity: Medium

ID: 77859

File Name: asterisk_ast_2014_010.nasl

Version: 1.11

Type: remote

Family: Misc.

Published: 9/25/2014

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2014-6610

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: Settings/ParanoidReport, asterisk/sip_detected

Exploit Ease: No known exploits are available

Patch Publication Date: 9/18/2014

Vulnerability Publication Date: 9/18/2014

Reference Information

CVE: CVE-2014-6610

BID: 69962

Detections

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