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Category:   Application (Generic)  >   Apache Traffic Server Vendors:   Apache Software Foundation
Apache Traffic Server HPACK Decompression and Chunked Data Processing Flaws Let Remote Users Deny Service
SecurityTracker Alert ID:  1038275
SecurityTracker URL:  http://securitytracker.com/id/1038275
CVE Reference:   CVE-2016-5396, CVE-2017-5659   (Links to External Site)
Date:  Apr 17 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 6.2.1
Description:   Two vulnerabilities were reported in Apache Traffic Server. A remote user can cause denial of service conditions on the target system.

A remote user can send specially crafted HPACK data to cause the decompression process to consume excessive memory on the target system [CVE-2016-5396]. This exploit method is referred to as an HPACK Bomb Attack.

A remote user can send specially crafted chunked data to cause the target service to crash [CVE-2017-5659].

Masaori Koshiba and Syeda Persia Aziz reported these vulnerabilities.

Impact:   A remote user can cause denial of service conditions.
Solution:   The vendor has issued a fix (6.2.1, 7.0.0).

The vendor advisories are available at:

https://issues.apache.org/jira/browse/TS-4507
https://issues.apache.org/jira/browse/TS-5019

Vendor URL:  trafficserver.apache.org/ (Links to External Site)
Cause:   Resource error, State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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