A remote overflow exists in Cisco IOS. The operating system fails to gracefully handle more than 255 Open Shortest Path First (OSPF) neighbors on an interface, resulting in a buffer overflow. With a specially crafted request, an attacker can cause denial of service, command execution, or manipulate the router's configuration, resulting in a loss of integrity and/or availability.
Classification
Location:
Remote / Network Access
Attack Type:
Denial of Service,
Input Manipulation
Impact:
Loss of Integrity,
Loss of Availability
Exploit:
Exploit Unknown
Disclosure:
OSVDB Verified
Solution
Upgrade to version 12.0(19)S, 12.0(19)ST, 12.1(1), 12.1(1)DB, 12.1(1)DC, 12.1(1)T or higher, as this has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.