Asterisk 11.x < 11.25.3 / 13.x < 13.17.2 / 14.x < 14.6.2 / 11.6 < 11.6-cert18 / 13.13 < 13.13-cert6 RTP/RTCP information leak (AST-2017-008)

Medium Nessus Plugin ID 104042

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VPR Score: 3.6

Synopsis

A telephony application running on the remote host is affected by an information disclosure vulnerability.

Description

According to its SIP banner, the version of Asterisk running on the remote host is 11.x prior to 11.25.3, 13.x prior to 13.17.2, 14.x prior to 14.6.2, 11.6 prior to 11.6-cert18, or 13.13 prior to 13.13-cert6. It is therefore, affected by an information disclosure vulnerability due to insufficient RTCP packet validation. A remote attacker could potentially read buffer contents and redirect where the next RTCP report goes.

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 11.25.3 / 13.17.2 / 14.6.2 / 11.6-cert18 / 13.13-cert6 or later.

See Also

http://downloads.asterisk.org/pub/security/AST-2017-008.html

Plugin Details

Severity: Medium

ID: 104042

File Name: asterisk_ast_2017_008.nasl

Version: 1.6

Type: remote

Family: Misc.

Published: 2017/10/20

Updated: 2019/11/12

Dependencies: 63202

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2017-14603

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

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

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 Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/09/19

Vulnerability Publication Date: 2017/05/22

Reference Information

CVE: CVE-2017-14099, CVE-2017-14603

BID: 100669, 101237