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Category:   Application (Web Server/CGI)  >   Apache Tomcat Vendors:   Apache Software Foundation
Apache Tomcat HTTP/2 Header Parsing Error Lets Remote Users Deny Service
SecurityTracker Alert ID:  1037330
SecurityTracker URL:  http://securitytracker.com/id/1037330
CVE Reference:   CVE-2016-6817   (Links to External Site)
Date:  Nov 23 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 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 cause denial of service conditions on the target system.

A remote user can send a specially crafted HTTP/2 header to cause the target service to enter an infinite loop.

Impact:   A remote user can cause denial of service conditions.
Solution:   The vendor has issued a fix (8.5.8, 9.0.0.M13).

The vendor advisories are available at:

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:   Boundary 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 11 2017 (IBM Issues Fix for IBM Cognos Business Viewpoint) Apache Tomcat HTTP/2 Header Parsing Error Lets Remote Users Deny Service
IBM has issued a fix for IBM Cognos Business Viewpoint.



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