FreeBSD : asterisk -- Remote crash vulnerability in HTTP websocket upgrade (77f67b46-bd75-11e8-81b6-001999f8d30b)

high Nessus Plugin ID 117651

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The Asterisk project reports :

There is a stack overflow vulnerability in the res_http_websocket.so module of Asterisk that allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket. The attackers request causes Asterisk to run out of stack space and crash.

As a workaround disable HTTP websocket access by not loading the res_http_websocket.so module.

Solution

Update the affected packages.

See Also

https://downloads.asterisk.org/pub/security/AST-2018-009.html

http://www.nessus.org/u?2f113631

Plugin Details

Severity: High

ID: 117651

File Name: freebsd_pkg_77f67b46bd7511e881b6001999f8d30b.nasl

Version: 1.3

Type: local

Published: 9/24/2018

Updated: 12/21/2018

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:asterisk13, p-cpe:/a:freebsd:freebsd:asterisk15, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 9/21/2018

Vulnerability Publication Date: 8/16/2018

Reference Information

CVE: CVE-2018-17281