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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
OpenSSL DTLS Fragment Processing Error Lets Remote Users Consume Excessive Memory Resources
SecurityTracker Alert ID:  1036689
SecurityTracker URL:  http://securitytracker.com/id/1036689
CVE Reference:   CVE-2016-2179   (Links to External Site)
Date:  Aug 25 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in OpenSSL. A remote user can consume excessive memory on the target system.

A remote user can open a large number of simultaneous connections and send specially crafted DTLS record fragments to fill up buffer queues and consume excessive memory on the target system. The buffer queues are cleared when the connections are closed.

Quan Luo reported this vulnerability.

Impact:   A remote user can consume excessive memory resources on the target system.
Solution:   The vendor has issued a source code fix, available at:

https://github.com/openssl/openssl/commit/00a4c1421407b6ac796688871b0a49a179c694d9

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

Message History:   This archive entry has one or more follow-up message(s) listed below.
Sep 23 2016 (FreeBSD Issues Fix) OpenSSL DTLS Fragment Processing Error Lets Remote Users Consume Excessive Memory Resources
FreeBSD has issued a fix for FreeBSD 9.3, 10.1, 10.2, 10.3, and 11.0.
Nov 15 2016 (IBM Issues Fix for IBM AIX) OpenSSL DTLS Fragment Processing Error Lets Remote Users Consume Excessive Memory Resources
IBM has issued a fix for IBM AIX 5.3, 6.1, 7.1, and 7.2.



 Source Message Contents



[Original Message Not Available for Viewing]


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