McAfee E-Business Server Administration Interface Can Be Crashed By Remote Users Sending Invalid Packet Length Header Values
SecurityTracker Alert ID: 1017929|
SecurityTracker URL: http://securitytracker.com/id/1017929
(Links to External Site)
Updated: May 14 2008|
Original Entry Date: Apr 18 2007
Denial of service via network|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): 8.1.0 and prior versions for Linux, AIX, and HP-UX. 8.5.1 and prior versions for Windows and Solaris.|
A vulnerability was reported in McAfee E-Business Server. A remote user can cause denial of service conditions.|
A remote user can send specially crafted authentication data to cause the target administration server to crash. A packet with a length value longer than the length of the packet can trigger an unhandled exception.
The operation of other server functions are not affected by the crashing of the administration server.
The vendor was notified on February 7, 2007.
iDefense reported this vulnerability.
A remote user can cause denial of service conditions.|
The vendor has issued fixed versions (8.5.2 and 8.1.1).|
The McAfee advisory is available at:
Vendor URL: knowledge.mcafee.com/SupportSite/dynamickc.do?externalId=612751&command=show&forward=nonthreadedKC (Links to External Site)
Exception handling error|
|Underlying OS: Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (NT), Windows (2000), Windows (2003)|
Source Message Contents
Subject: iDefense Security Advisory 04.17.07: McAfee E-Business Admin Server|
McAfee E-Business Admin Server Invalid Data Length DoS Vulnerability
iDefense Security Advisory 04.17.07
Apr 17, 2007
McAfee e-Business Server is used to provide transparent encryption for
corporate end users storing and sharing documents. It is composed of
two utilities; a command line program that encrypts/decrypts data and
manages the keyring, and an administration server that can be used to
update user profiles and manage keys remotely. More information can be
found on the vendor's web site at the following URL.
Remote exploitation of a denial of service (DoS) vulnerability in McAfee
Inc.'s E-Business Server could allow an attacker to crash the
Prior to authentication, an attacker can crash the server by sending a
malformed authentication packet. The server will read in a length from
the packet header, and then attempt to read that many bytes from the
buffer. By specifying a large length value and sending a small packet,
the server can be caused to read off the end of mapped heap memory.
This will trigger an exception that is not handled, and the server will
Exploitation of this vulnerability allows an attacker to crash the
In this situation, the administrator will not be able to configure user
profiles, or add/remove/manage keys.
It is important to note that the core functionality of this product is
contained within the command line utility.
The command line utility would commonly be used by a web script that
needs to encrypt/decrypt data, or by a SMTP gateway that transparently
encrypts routed mail. This utility will continue to work regardless of
whether the administration server is running or not.
iDefense has confirmed the existence of this vulnerability in McAfee
E-Business Server version 126.96.36.199 for Windows. Previous versions may
also be affected.
iDefense is currently unaware of any workarounds for this issue.
VI. VENDOR RESPONSE
McAfee has addressed this vulnerability with updated packages. More
information is available in McAfee's Security Bulletin 612751 at the
VII. CVE INFORMATION
A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not
been assigned yet.
VIII. DISCLOSURE TIMELINE
02/07/2007 Initial vendor notification
02/07/2007 Initial vendor response
04/17/2007 Coordinated public disclosure
The discoverer of this vulnerability wishes to remain anonymous.
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