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Category:   Application (Web Server/CGI)  >   Apache Tomcat Vendors:   Apache Software Foundation
Apache Tomcat NIO/NIO2 Connector Management Flaw Lets Remote Users Access Other User's Sessions in Certain Cases
SecurityTracker Alert ID:  1041376
SecurityTracker URL:  http://securitytracker.com/id/1041376
CVE Reference:   CVE-2018-8037   (Links to External Site)
Date:  Jul 26 2018
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 8.5.5 to 8.5.31, 9.0.0.M9 to 9.0.9
Description:   A vulnerability was reported in Apache Tomcat. A remote user can access other user sessions.

A remote user can exploit a flaw in the tracking of connection closures in NIO/NIO2 connectors to establish a new connection that re-uses an existing user session.

Dmitry Treskunov reported this vulnerability.

Impact:   A remote user can access another user's session.
Solution:   The vendor has issued a fix (8.5.32, 9.0.10).

The vendor advisories are available at:

https://tomcat.apache.org/security-8.html
https://tomcat.apache.org/security-9.html

Vendor URL:  tomcat.apache.org/security-9.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 3 2018 (Red Hat Issues Fix for Red Hat JBoss) Apache Tomcat NIO/NIO2 Connector Management Flaw Lets Remote Users Access Other User's Sessions in Certain Cases
Red Hat has issued a fix for Red Hat JBoss for Red Hat Enterprise Linux 6 and 7.
Oct 3 2018 (Red Hat Issues Fix for Red Hat JBoss) Apache Tomcat NIO/NIO2 Connector Management Flaw Lets Remote Users Access Other User's Sessions in Certain Cases
Red Hat has issued a fix for Red Hat JBoss for Red Hat Enterprise Linux.



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