ZyXEL Prestige 642R malformed TCP packet denial of service

zyxel-tcp-packet-dos (9372) The risk level is classified as MediumMedium Risk

Description:

The ZyXEL Prestige 642R router is vulnerable to a denial of service attack. A remote attacker can send a TCP packet with the SYN and ACK flags set to block services on the router. If a TCP packet with the SYN and FIN flags are set, services on the router would become inaccessible for a short period of time.

Note: Services affected by this vulnerability include Telnet, FTP, and DHCP.


Consequences:

Denial of Service

Remedy:

No remedy available as of July 1, 2014.

References:

Platforms Affected:

  • ZyXEL Prestige 342R

Reported:

Jun 17, 2002

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