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Category:   Application (Web Server/CGI)  >   nginx Vendors:   nginx.org
(Ubuntu Issues Fix) nginx on Debian Log File Permissions Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1037105
SecurityTracker URL:  http://securitytracker.com/id/1037105
CVE Reference:   CVE-2016-1247   (Links to External Site)
Date:  Oct 26 2016
Impact:   Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in nginx on Debian-based systems. A local user can obtain elevated privileges on the target system.

The nginx packages on Debian-based systems do not properly handle log file permissions in the '/var/log/nginx' directory. A local user with 'www-data' user privileges can obtain root privileges on the target system.

The original advisory is available at:

https://legalhackers.com/advisories/Nginx-Exploit-Deb-Root-PrivEsc-CVE-2016-1247.html

Dawid Golunski reported this vulnerability.

Impact:   A local user with 'www-data' privileges can obtain root privileges on the target system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-3114-1

Vendor URL:  www.ubuntu.com/usn/usn-3114-1 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 16.04 LTS, 16.10

Message History:   This archive entry is a follow-up to the message listed below.
Oct 26 2016 nginx on Debian Log File Permissions Let Local Users Gain Elevated Privileges



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