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Category:   Application (Web Server/CGI)  >   Apache Tomcat Vendors:   Apache Software Foundation
Apache Tomcat Lets Remote Users Conduct HTTP Response Splitting Attacks
SecurityTracker Alert ID:  1037332
SecurityTracker URL:  http://securitytracker.com/id/1037332
CVE Reference:   CVE-2016-6816   (Links to External Site)
Date:  Nov 23 2016
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.0.0 to 6.0.47, 7.0.0 to 7.0.72, 8.0.0.RC1 to 8.0.38, 8.5.0 to 8.5.6, 9.0.0.M1 to 9.0.0.M11
Description:   A vulnerability was reported in Apache Tomcat. A remote user can conduct HTTP response splitting attacks.

A remote user can submit a specially crafted URL to cause the target server to return a split response. A remote user can exploit this to spoof content on the target server, attempt to poison any intermediate web caches, or conduct cross-site scripting attacks.

Regis Leroy from Makina Corpus reported this vulnerability.

Impact:   A remote user can create a URL that, when loaded by the target user, will cause arbitrary content to be displayed.

A remote user may be able to poison any intermediate web caches with arbitrary content.

Solution:   The vendor has issued a fix (6.0.48, 7.0.73, 8.0.39, 8.5.8, 9.0.0.M13).

The vendor advisories are available at:

http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-8.html
http://tomcat.apache.org/security-9.html

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

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 18 2017 (IBM Issues Fix for IBM Rational License Key Server) Apache Tomcat Lets Remote Users Conduct HTTP Response Splitting Attacks
IBM has issued a fix for IBM Rational License Key Server Administration and Reporting Tool.
Mar 15 2017 (Red Hat Issues Fix) Apache Tomcat Lets Remote Users Conduct HTTP Response Splitting Attacks
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
Mar 16 2017 (Oracle Issues Fix for Oracle Linux) Apache Tomcat Lets Remote Users Conduct HTTP Response Splitting Attacks
Oracle has issued a fix for Oracle Linux 6.
May 11 2017 (IBM Issues Fix for IBM Cognos Business Viewpoint) Apache Tomcat Lets Remote Users Conduct HTTP Response Splitting Attacks
IBM has issued a fix for IBM Cognos Business Viewpoint.



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