ISS Protection Brief: Entrust Libkmp Library Buffer Overflow

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Internet Security Systems Protection Brief
August 26, 2004

Entrust LibKmp Library Buffer Overflow

Summary:

ISS X-Force has discovered a flaw in the Entrust LibKmp ISAKMP library.
This library is used by multiple VPN vendors to facilitate IKE key
exchange for IPSEC-based VPN products. LibKmp handles virtually all
processing of inbound ISAKMP packets. This library is also responsible
for the validation and sanity checking of inbound requests. A flaw exists
in these validation routines that results in a buffer overflow
vulnerability.

Business Impact:

Compromise of VPN servers and enterprise firewalls may lead to exposure of
confidential information, loss of productivity, and further network
compromise. This flaw may allow attackers to gain complete control over
vulnerable VPN servers/firewalls and all data contained therein. Successful
exploitation of this vulnerability could also be used to gain unauthorized
access to networks being protected by vulnerable VPN/firewall products.
default configurations.

For the complete X-Force Protection Alert, please visit:
http://xforce.iss.net/xforce/alerts/id/181

Internet Security Systems, Inc. (ISS) is the trusted expert to global
enterprises and world governments, providing products and services
that protect against Internet threats. An established world leader
in security since 1994, ISS delivers proven cost efficiencies and
reduces regulatory and business risk across the enterprise for
more than 11,000 customers worldwide. ISS products and services
are based on the proactive security intelligence conducted by ISS’
X-Force® research and development team – the unequivocal world
authority in vulnerability and threat research. Headquartered
in Atlanta, Internet Security Systems has additional operations
throughout the Americas, Asia, Australia, Europe and the Middle East.

Copyright (c) 2004 Internet Security Systems, Inc. All rights reserved
worldwide.

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Please send suggestions, updates, and comments to:
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