CVE-2018-17281high
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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.
References
http://downloads.asterisk.org/pub/security/AST-2018-009.html
http://packetstormsecurity.com/files/149453/Asterisk-Project-Security-Advisory-AST-2018-009.html
http://seclists.org/fulldisclosure/2018/Sep/31
http://www.securityfocus.com/bid/105389
http://www.securitytracker.com/id/1041694
https://issues.asterisk.org/jira/browse/ASTERISK-28013
https://lists.debian.org/debian-lts-announce/2018/09/msg00034.html
https://seclists.org/bugtraq/2018/Sep/53
Details
Source: MITRE
Published: 2018-09-24
Updated: 2019-10-03
Type: CWE-400
Risk Information
CVSS v2
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
CVSS v3
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:digium:asterisk:*:*:*:*:lts:*:*:* versions from 13.0.0 to 13.23.0 (inclusive)
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* versions from 14.0.0 to 14.7.7 (inclusive)
cpe:2.3:a:digium:asterisk:*:*:*:*:standard:*:*:* versions from 15.0.0 to 15.6.0 (inclusive)
Configuration 2
OR
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:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.1:cert8:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.8:cert1:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.8:cert2:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.8:cert3:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.8:cert4:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert1:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert2:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert3:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert4:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert5:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert6:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert7:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert8:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.13:cert9:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.21:cert1:*:*:lts:*:*:*
cpe:2.3:a:digium:certified_asterisk:13.21:cert2:*:*:lts:*:*:*
Configuration 3
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 119131 | GLSA-201811-11 : Asterisk: Multiple vulnerabilities | Nessus | Gentoo Local Security Checks | high |
| 118158 | Debian DSA-4320-1 : asterisk - security update | Nessus | Debian Local Security Checks | high |
| 117810 | Debian DLA-1523-1 : asterisk security update | Nessus | Debian Local Security Checks | high |
| 117808 | Asterisk 13.x < 13.23.1 / 14.x < 14.7.8 / 15.x < 15.6.1 / 13.21 < 13.21-cert3 HTTP Websocket Stack Overflow (AST-2018-009) | Nessus | Misc. | high |
| 117651 | FreeBSD : asterisk -- Remote crash vulnerability in HTTP websocket upgrade (77f67b46-bd75-11e8-81b6-001999f8d30b) | Nessus | FreeBSD Local Security Checks | high |