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FreeBSD : asterisk -- Remote Crash Vulnerability in chan_sip channel driver (e9d2e981-a46d-11e9-bed9-001999f8d30b)

medium Nessus Plugin ID 126668

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Synopsis

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

Description

The Asterisk project reports :

When T.38 faxing is done in Asterisk a T.38 reinvite may be sent to an endpoint to switch it to T.38. If the endpoint responds with an improperly formatted SDP answer including both a T.38 UDPTL stream and an audio or video stream containing only codecs not allowed on the SIP peer or user a crash will occur. The code incorrectly assumes that there will be at least one common codec when T.38 is also in the SDP answer.

Solution

Update the affected packages.

See Also

https://downloads.asterisk.org/pub/security/AST-2019-003.html

http://www.nessus.org/u?9922ccf7

Plugin Details

Severity: Medium

ID: 126668

File Name: freebsd_pkg_e9d2e981a46d11e9bed9001999f8d30b.nasl

Version: 1.3

Type: local

Published: 7/15/2019

Updated: 1/8/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.6

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

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:H/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: p-cpe:/a:freebsd:freebsd:asterisk13, p-cpe:/a:freebsd:freebsd:asterisk15, p-cpe:/a:freebsd:freebsd:asterisk16, cpe:/o:freebsd:freebsd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/12/2019

Vulnerability Publication Date: 6/28/2019

Reference Information

CVE: CVE-2019-13161