High severity · published Sep 24, 2018
CVE-2018-17281
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…
7.5
CVSS
52.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)52.4% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
13.0.0 through 13.23.0; 14.0.0 through 14.7.7; 15.0.0 through 15.6.0 · source: NVD
CA
Certified Asterisk · Digium
11.6; 11.6; 11.6; 11.6; 11.6; 11.6; +22 more · source: NVD
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-17281
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-17281
Patch
http://downloads.asterisk.org/pub/security/AST-2018-009.html
Third Party Advisory
http://packetstormsecurity.com/files/149453/Asterisk-Project-Security-Advisory-AST-2018-009.html
Mailing List
http://seclists.org/fulldisclosure/2018/Sep/31
Third Party Advisory
http://www.securityfocus.com/bid/105389
Third Party Advisory
http://www.securitytracker.com/id/1041694
Issue Tracking
https://issues.asterisk.org/jira/browse/ASTERISK-28013
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