Asterisk 15.x < 15.7.2 / 16.x < 16.2.1 DoS (AST-2019-001)

medium Nessus Plugin ID 122670

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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 15.7.2, 16.x prior to 16.2.1. It is therefore, affected by an error related to handling SDP traffic and RTP negotiation described in AST-2019-001. This error allows denial of service attacks.

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 15.7.2 / 16.2.1 or later.

Plugin Details

Severity: Medium

ID: 122670

File Name: asterisk_ast_2019_001.nasl

Version: 1.4

Type: remote

Family: Misc.

Published: 3/8/2019

Updated: 3/7/2023

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-2019-7251

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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: asterisk/sip_detected, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 1/24/2019

Vulnerability Publication Date: 1/24/2019

Reference Information

CVE: CVE-2019-7251

BID: 107212

Detections

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