Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2018-17281

Severity CVSS v4.0:
Pending analysis
Type:
CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')
Publication date:
24/09/2018
Last modified:
03/10/2019

Description

There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:digium:asterisk:*:*:*:*:lts:*:*:* 13.0.0 (including) 13.23.0 (including)
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* 14.0.0 (including) 14.7.7 (including)
cpe:2.3:a:digium:asterisk:*:*:*:*:standard:*:*:* 15.0.0 (including) 15.6.0 (including)
cpe:2.3:a:digium:certified_asterisk:11.6:cert12:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:11.6:cert13:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:11.6:cert14:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:11.6:cert15:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:11.6:cert16:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:11.6:cert17:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:11.6:cert18:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.1:cert3:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.1:cert4:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.1:cert5:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.1:cert6:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.1:cert7:*:*:lts:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools