Secunia Security Advisory - A vulnerability has been reported in Cisco IOS, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.
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TITLE:
Cisco IOS Next Hop Resolution Protocol Buffer Overflow
SECUNIA ADVISORY ID:
SA26360
VERIFY ADVISORY:
http://secunia.com/advisories/26360/
CRITICAL:
Moderately critical
IMPACT:
DoS, System access
WHERE:
>From local network
REVISION:
1.1 originally posted 2007-08-09
OPERATING SYSTEM:
Cisco IOS 12.x
http://secunia.com/product/182/
Cisco IOS R12.x
http://secunia.com/product/50/
DESCRIPTION:
A vulnerability has been reported in Cisco IOS, which can be
exploited by malicious people to cause a DoS (Denial of Service) or
compromise a vulnerable system.
The vulnerability is caused due to a boundary error in the
implementation of the Next Hop Resolution Protocol. This can be
exploited to cause a buffer overflow by sending a specially crafted
NHRP packet containing an invalid total length in the fixed header.
Successful exploitation requires that support for the Next Hop
Resolution Protocol is enabled.
SOLUTION:
Apply updated versions or vendor workarounds (please see the vendor
advisory for details).
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Martin Kluge.
CHANGELOG:
2007-08-09: Updated "Description" section with additional
information.
ORIGINAL ADVISORY:
http://www.cisco.com/warp/public/707/cisco-sa-20070808-nhrp.shtml
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