CVE:CVE-2017-3768
CNNVD:CNNVD-201801-1035
Lenovo System x是中国联想（Lenovo）公司的一款服务器。IBM System x是美国IBM公司的一款服务器。
Lenovo System x系列4.4之前版本和IBM System x系列6.4之前版本中存在安全漏洞。攻击者可借助大量失败的身份验证请求利用该漏洞造成拒绝服务（重启）。
solution:Upgrade lenova flex_system_x240_m5_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova flex_system_x280_x6_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova flex_system_x440_m4_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova flex_system_x480_x6_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova flex_system_x880_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova nextscale_nx360_m5_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova system_x3250_m6_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova system_x3500_m5_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova system_x3550_m5_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova system_x3650_m5_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova system_x3750_m4_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova system_x3850_x6_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova system_x3950_x6_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade lenova flex_system_x240_m4_firmware to a higher version than 4.4,and avoid the version (,4.4); Upgrade ibm bladecenter_hs22_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm bladecenter_hs23_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm bladecenter_hs23e_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm flex_system_x220_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm flex_system_x222_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm flex_system_x240_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm flex_system_x280_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm flex_system_x440_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm flex_system_x480_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm flex_system_x880_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm idataplex_dx360_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm idataplex_dx360_m4_water_cooled_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm nextscale_nx360_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3100_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3100_m5_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3250_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3250_m5_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3300_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3500_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3530_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3550_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3630_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3650_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3650_m4_bd_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3750_m4_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3850_x6_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3950_x6_firmware to a higher version than 6.4,and avoid the version (,6.4); Upgrade ibm system_x3650_m4_hd_firmware to a higher version than 6.4,and avoid the version (,6.4)