CVE:CVE-2001-1183
CNNVD:CNNVD-200107-079
Cisco IOS 12.1和12.2版本中的PPTP实现存在漏洞。远程攻击者可以借助畸形数据包导致服务拒绝（崩溃）。
solution:Upgrade cisco ios to a higher version than 12.1e,12.1ez,12.1t,12.1ya,12.1yc,12.1yd,12.2,12.2t,12.2xa,12.2xd,12.2xe,12.2xh,12.2xq,and avoid the version 12.1e,12.1ez,12.1t,12.1ya,12.1yc,12.1yd,12.2,12.2t,12.2xa,12.2xd,12.2xe,12.2xh,12.2xq