CVE:CVE-2002-0835
CNNVD:CNNVD-200210-060
Red Hat Linux是一款开放源代码Linux操作系统，包含Preboot eXecution Environment (PXE)服务程序，PXE用于从远程磁盘映象中启动Linux系统。
Preboot eXecution Environment (PXE)服务程序对未预料到的DHCP包处理不正确，远程攻击者可以利用这个漏洞进行拒绝服务攻击。
PXE服务程序对来自VOIP电话系统的DHCP包请求处理不正确，远程攻击者可以构建VOIP电话系统的DHCP请求包而导致PXE服务程序崩溃。
solution:Upgrade caldera openlinux_server to a higher version than 3.1,3.1.1,and avoid the version 3.1,3.1.1; Upgrade caldera openlinux_workstation to a higher version than 3.1,3.1.1,and avoid the version 3.1,3.1.1; Upgrade redhat pre-execution_environment to a higher version than 0.1,and avoid the version 0.1; Upgrade hp secure_os to a higher version than 1.0,and avoid the version 1.0