CVE:CVE-2021-34566
CNNVD:CNNVD-202211-2426
WAGO是德国万可（WAGO）公司的一款750-88x系列可编程逻辑控制器。该设备专门为在工业环境下应用而设计的数字运算操作电子系统。
WAGO I/O-Check Service存在安全漏洞，该漏洞源于未经身份验证的远程攻击者可以发送包含操作系统命令的特制数据包，使iocheck进程崩溃并写入内存，从而导致完整性丧失和DoS。
solution:Upgrade wago 750-8100_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8101_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8101/025-000_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8102_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8102/025-000_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/000-011_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/000-012_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/000-022_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/025-000_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/025-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/025-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/040-000_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 750-8202/040-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 752-8303/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4101_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4102_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4103_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4104_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4201/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4202/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4203/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4204/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4205/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4205/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4206/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4206/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4301/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4302/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4303/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4304/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4305/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-4306/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5203/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5204/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5205/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5206/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5303/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5304/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5305/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-5306/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6201/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6202/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6203/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6204/8000-001_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6301/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6302/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6303/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2; Upgrade wago 762-6304/8000-002_firmware to a higher version than 18,18,18:patch_1,18:patch_2,and avoid the version (,18),18,18:patch_1,18:patch_2