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The remote device is missing a vendor-supplied security patch.
It is possible to send an Address Resolution Protocol (ARP) packet on
a local broadcast interface (for example, Ethernet, cable, Token
Ring, FDDI) which could cause a router or switch running specific
versions of Cisco IOS Software Release to stop sending and receiving
ARP packets on the local router interface. This will, in a short time,
cause the router and local hosts to be unable to send packets to each
other. ARP packets received by the router for the router's own
interface address but a different Media Access Control (MAC) address
will overwrite the router's MAC address in the ARP table with the one
from the received ARP packet. This was demonstrated to attendees of
the Black Hat conference and should be considered to be public
knowledge. This attack is only successful against devices on the
segment local to the attacker or attacking host.
This vulnerability is documented in Cisco Bug ID CSCdu81936.
A local attacker may use this flaw to prevent your network from
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 3.7
Public Exploit Available : false
Nessus Plugin ID: 10984 (CSCdu81936.nasl)
Bugtraq ID: 3547
CVE ID: CVE-2001-0895
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