Home/CVE/There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x throu
CVE

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 throu

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.

HIGH · CVSS 7.5 EPSS 0.80258
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

5
digium asterisk>= 13.0.0 and <= 13.23.0
digium asterisk>= 14.0.0 and <= 14.7.7
digium asterisk>= 15.0.0 and <= 15.6.0
digium certified asteriskall versions
debian linuxall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · Asterisk-Project-Security-Advisory-AST-2018-009.htmlpacketstormsecurity.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Sep 2018 · 10:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://downloads.asterisk.org/pub/security/AST-2018-009.htmlPatchVendor Advisory
http://seclists.org/fulldisclosure/2018/Sep/31Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/105389Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041694Third Party AdvisoryVDB Entry
https://issues.asterisk.org/jira/browse/ASTERISK-28013Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00034.htmlMailing ListThird Party Advisory
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