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Category:   Device (Firewall)  >   McAfee Firewall Enterprise Vendors:   McAfee
(McAfee Issues Fix for McAfee Firewall Enterprise) Ntpd MAC Checking Failure Lets Remote Users Bypass Authentication
SecurityTracker Alert ID:  1032860
SecurityTracker URL:  http://securitytracker.com/id/1032860
CVE Reference:   CVE-2015-1798   (Links to External Site)
Date:  Jul 11 2015
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  

Description:   A vulnerability was reported in Ntpd. A remote user can bypass authentication on the target system. McAfee Firewall Enterprise is affected.

When configured for symmetric key authentication, the system accepts packets that do not contain a message authentication code (MAC) as valid packets. A remote user with the ability to conduct a man-in-the-middle attack can send a specially crafted spoofed packet that does not contain a MAC value to bypass authentication.

Authentication using autokey is not affected.

Miroslav Lichvar of Red Hat reported this vulnerability.

Impact:   A remote user can bypass authentication on the target system.
Solution:   McAfee has issued a fix for McAfee Firewall Enterprise (7.0.1.03E70, 8.2.1E139, 8.3.1E74, 8.3.2E49).

The McAfee advisory is available at:

https://kc.mcafee.com/corporate/index?page=content&id=SB10114

Vendor URL:  kc.mcafee.com/corporate/index?page=content&id=SB10114 (Links to External Site)
Cause:   Authentication error

Message History:   This archive entry is a follow-up to the message listed below.
Apr 7 2015 Ntpd MAC Checking Failure Lets Remote Users Bypass Authentication



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