[NT] Cisco Security Agent Vulnerable to Crafted IP Attack



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Cisco Security Agent Vulnerable to Crafted IP Attack
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SUMMARY

Cisco Security Agent (CSA) is "a network security software agent that
provides threat protection for server and desktop computing systems".

A malicious attacker may be able to send a crafted IP packet to a Windows
workstation or server running CSA 4.5 which may cause the device to halt
and/or reload. Repeated exploitation will create a sustained DoS (denial
of service).

DETAILS

Vulnerable Systems:
* Cisco CSA version 4.5 when running on any Windows except Windows XP.

Immune Systems:
* Cisco CSA 4.0 and earlier
* Cisco CSA while running on Solaris
* Cisco CSA while running on Linux
* Cisco CSA while running on Windows XP

If a crafted IP packet with certain characteristics are sent to a Windows
platform running CSA 4.5, Windows will halt with a blue screen and system
crash. When exploited, the affected machine will require a reboot to
become operational again.

Successful exploitation of this vulnerability will cause a reload of the
affected machine.

This vulnerability is documented in the Cisco Bug Toolkit as Bug ID
CSCsa85175

This issue is fixed in CSA maintenance version 4.5.1.616 which is
available for download at:
<http://www.cisco.com/cgi-bin/tablebuild.pl/csa.>
http://www.cisco.com/cgi-bin/tablebuild.pl/csa.

This issue is also fixed with CSA hotfix version 4.5.0.573 or later which
is available for download at:
<http://www.cisco.com/cgi-bin/tablebuild.pl/csahf-crypto>
http://www.cisco.com/cgi-bin/tablebuild.pl/csahf-crypto

Workarounds:
There are no recommended workarounds for this vulnerability. Please see
the Obtaining Fixed Software section for appropriate solutions to resolve
this vulnerability.


ADDITIONAL INFORMATION

The information has been provided by <mailto:psirt@xxxxxxxxx> Cisco
Systems Product Security Incident Response Team.
The original article can be found at:
<http://www.cisco.com/warp/public/707/cisco-sa-20050713-csa.shtml>
http://www.cisco.com/warp/public/707/cisco-sa-20050713-csa.shtml



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