// For flags

CVE-2017-2670

undertow: IO thread DoS via unclean Websocket closing

Severity Score

7.5
*CVSS v3

Exploit Likelihood

8.2%
*EPSS

Affected Versions

8
*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.

Se ha encontrado en Undertow en versiones anteriores a la 1.3.28 que con el cierre no seguro de TCP, el servidor Websocket entra en bucle infinito en cada hilo IO, provocando efectivamente una denegación de servicio (DoS).

It was found that with non-clean TCP close, Websocket server gets into infinite loop on every IO thread, effectively causing DoS.

Red Hat JBoss Enterprise Application Platform is a platform for Java applications based on the JBoss Application Server. This release of Red Hat JBoss Enterprise Application Platform 7.0.6 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.0.5, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Security Fix: It was discovered that under certain conditions RESTEasy could be forced to parse a request with YamlProvider, resulting in unmarshalling of potentially untrusted data. An attacker could possibly use this flaw execute arbitrary code with the permissions of the application using RESTEasy.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-12-01 CVE Reserved
  • 2017-06-07 CVE Published
  • 2024-08-05 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
Affected Vendors, Products, and Versions (8)