Asterisk 15.x < 15.6.2 / 16.x < 16.0.1 DoS (AST-2018-010)

high Nessus Plugin ID 118974

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Synopsis

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

Description

According to its SIP banner, the version of Asterisk running on the remote host is 15.x prior to 15.6.2, 16.x prior to 16.0.1. It is therefore, affected by an error related to the functions 'dns_srv' and 'dns_naptr' described in AST-2018-010. This error allows denial of service attacks.

Also note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Asterisk version 15.6.2 / 16.0.1 or later.

Plugin Details

Severity: High

ID: 118974

File Name: asterisk_ast_2018_010.nasl

Version: 1.5

Type: remote

Family: Misc.

Published: 11/15/2018

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2018-19278

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

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: 11/14/2018

Vulnerability Publication Date: 10/23/2018

Reference Information

CVE: CVE-2018-19278

BID: 105934

IAVA: 2018-A-0380-S

Detections

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