Denial of Service Vulnerability in Cisco VPN Concentrators and Client

CVE-2003-0259

Summary

The vulnerability allows remote attackers to exploit a flaw in the SSH initialization process on Cisco VPN 3000 series concentrators and the Cisco VPN 3002 Hardware Client. By sending a specially crafted SSH initialization packet, an attacker can trigger a reload of the affected devices, resulting in service disruption and unavailability. This highlights the importance of secure configurations and timely updates to mitigate the risks posed by malformed traffic.

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