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Category:   Application (Web Server/CGI)  >   nginx Vendors:   nginx.org
(Ubuntu Issues Fix) nginx Null Pointer Dereference in ngx_chain_to_iovec() Lets Remote Users Deny Service
SecurityTracker Alert ID:  1036022
SecurityTracker URL:  http://securitytracker.com/id/1036022
CVE Reference:   CVE-2016-4450   (Links to External Site)
Date:  Jun 2 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.3.9 - 1.11.0
Description:   A vulnerability was reported in nginx. A remote user can cause denial of service conditions on the target system.

A remote user can send specially crafted data to trigger a null pointer dereference in the ngx_chain_to_iovec() function when saving the client request body to a temporary file and cause a worker process to crash.

Impact:   A remote user can cause a worker process to crash.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-2991-1

Vendor URL:  www.ubuntu.com/usn/usn-2991-1 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 15.10, 16.04 LTS

Message History:   This archive entry is a follow-up to the message listed below.
Jun 2 2016 nginx Null Pointer Dereference in ngx_chain_to_iovec() Lets Remote Users Deny Service



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