CVE:CVE-2021-31883
CNNVD:CNNVD-202111-847
Siemens Nucleus ReadyStart是德国Siemens公司的一个捆绑式解决方案。用于加速完整系统的快速启动并提供丰富的板级支持包 (Bsp)
Siemens Nucleus ReadyStart  存在缓冲区错误漏洞，该漏洞源于在处理 DHCP ACK 消息时，DHCP 客户端应用程序不会验证供应商选项的长度，从而导致拒绝服务条件。
solution:Upgrade siemens capital_vstar to a higher version than *; Upgrade siemens nucleus_net to a higher version than *; Upgrade siemens nucleus_readystart_v3 to a higher version than 2017.02.1,and avoid the version (,2017.02.1); Upgrade siemens nucleus_source_code to a higher version than *; Upgrade siemens apogee_modular_building_controller_firmware to a higher version than *; Upgrade siemens apogee_modular_equiment_controller_firmware to a higher version than *; Upgrade siemens apogee_pxc_compact_firmware to a higher version than *; Upgrade siemens apogee_pxc_modular_firmware to a higher version than *; Upgrade siemens talon_tc_compact_firmware to a higher version than *; Upgrade siemens talon_tc_modular_firmware to a higher version than *