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Category:   Application (Web Server/CGI)  >   Apache Tomcat Vendors:   Apache Software Foundation
Apache Tomcat URL Pattern Processing Error Lets Remote Users Bypass Certain Security Constraints on the Target System
SecurityTracker Alert ID:  1040427
SecurityTracker URL:  http://securitytracker.com/id/1040427
CVE Reference:   CVE-2018-1304   (Links to External Site)
Date:  Feb 23 2018
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.0.0 to 7.0.84, 8.0.0.RC1 to 8.0.49, 8.5.0 to 8.5.27, 9.0.0.M1 to 9.0.4
Description:   A vulnerability was reported in Apache Tomcat. A remote user can bypass security controls on the target system in certain cases.

The system does not enforce security constraint definitions that contain a URL pattern of "" (the empty string) that exactly maps to the context root. As a result, a remote user can bypass affected security constraints to access ostensibly restricted resources on the target system.

Patrick Rosendaal reported this vulnerability.

Impact:   A remote user can bypass certain security constraint definitions to access resources on the target system.
Solution:   The vendor has issued a fix (7.0.85, 8.0.50, 8.5.28, 9.0.5).

The vendor advisory is available at:

http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.5

Vendor URL:  tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.5 (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.
May 31 2018 (Ubuntu Issues Fix) Apache Tomcat URL Pattern Processing Error Lets Remote Users Bypass Certain Security Constraints on the Target System
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, 17.10, and 18.04 LTS.



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