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Category:   Device (Embedded Server/Appliance)  >   McAfee Email Gateway Vendors:   McAfee
(McAfee Issues Fix for McAfee Email Gateway) OpenSSH Bugs Let Remote Users Deny Service and Obtain Potentially Sensitive Timing Information and Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1041132
SecurityTracker URL:  http://securitytracker.com/id/1041132
CVE Reference:   CVE-2016-6515   (Links to External Site)
Date:  Jun 14 2018
Impact:   Denial of service via network, Disclosure of system information, Disclosure of user information, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.6 and before
Description:   Several vulnerabilities were reported in OpenSSH. A remote user can consume excessive CPU resources on the target system. A local user can obtain elevated privileges on the target system. A remote or local user can obtain potentially sensitive information on the target system. McAfee Email Gateway is affected.

A remote user can submit specially crafted (long) passwords to the target server to cause the crypt(3) function to consume excessive CPU resources on the target system [CVE-2016-6515]. Tomas Kuthan (Oracle), Andres Rojas, and Javier Nieto separately reported this vulnerability.

A local user can set specially crafted environment variables to conduct attacks against the 'bin/login' process on systems where PAM is configured to read user-specified environment variables and 'sshd_config' is set with'UseLogin=yes' [CVE-2015-8325]. The sshd(8) portable version is affected. Shayan Sadigh reported this vulnerability.

A remote or local user may be able to observe timing differences in the ssh(1) and sshd(8) CBC padding oracle countermeasures. Jean Paul Degabriele, Kenny Paterson, Torben Hansen, and Martin Albrecht reported this vulnerability.

A remote or local user may be able to detect timing differences in the ssh(1) and sshd(8) MAC verification for Encrypt-then-MAC (EtM) mode transport MAC algorithms. No leakage has been observed. Jean Paul Degabriele, Kenny Paterson, Torben Hansen, and Martin Albrecht reported this vulnerability.

Impact:   A remote user can consume excessive CPU resources on the target system.

A local user can obtain elevated privileges on the target system.

A remote or local user can obtain potentially sensitive timing information.

Solution:   McAfee has issued a fix for CVE-2016-6515 for McAfee Email Gateway (7.6.406h1219837-3484.100).

The McAfee advisory is available at:

https://kc.mcafee.com/corporate/index?page=content&id=SB10239

Vendor URL:  kc.mcafee.com/corporate/index?page=content&id=SB10239 (Links to External Site)
Cause:   Access control error, Input validation error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Aug 1 2016 OpenSSH Bugs Let Remote Users Deny Service and Obtain Potentially Sensitive Timing Information and Let Local Users Gain Elevated Privileges



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