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Category:   Device (Storage)  >   QNAP Storage Devices Vendors:   QNAP Systems
(QNAP Systems Issues Fix for QNAP QTS) OpenSSH PAM Privilege Separation Bugs Lets Remote Users Gain Elevated Privileges in Certain Cases
SecurityTracker Alert ID:  1034135
SecurityTracker URL:  http://securitytracker.com/id/1034135
CVE Reference:   CVE-2015-6563, CVE-2015-6564   (Links to External Site)
Date:  Nov 12 2015
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Two vulnerabilities were reported in OpenSSH. A remote user can gain elevated privileges in certain cases. QNAP QTS is affected.

A remote user that can exploit a separate vulnerability in the unprivileged pre-authentication process to execute arbitrary code can then exploit two separate flaws in sshd(8) to bypass privilege separation controls [CVE-2015-6563, CVE-2015-6564].

Moritz Jodeit of Blue Frost Security GmbH reported these vulnerabilities.

Impact:   A remote user that can exploit an independent vulnerability in the pre-authentication process can bypass the privilege separation controls.
Solution:   QNAP Systems has issued a fix for CVE-2015-6563 and CVE-2015-6564 for QNAP QTS (4.2.0 RC2 (Build 0910)) [in September 2015].

The QNAP Systems advisory is available at:

https://www.qnap.com/i/en/support/con_show.php?cid=85

Vendor URL:  www.qnap.com/i/en/support/con_show.php?cid=85 (Links to External Site)
Cause:   Access control error

Message History:   This archive entry is a follow-up to the message listed below.
Aug 14 2015 OpenSSH PAM Privilege Separation Bugs Lets Remote Users Gain Elevated Privileges in Certain Cases



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