CVE:CVE-2017-18922
CNNVD:CNNVD-202006-1844
LibVNCServer是一款支持在程序中实现VNC（虚拟网络计算）服务器或客户端功能的跨平台C语言库。
LibVNCServer 9.12之前版本中的websockets.c文件存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。
solution:Upgrade libvncserver_project libvncserver to a higher version than 0.9.12,and avoid the version (,0.9.12); Upgrade canonical ubuntu_linux to a higher version than 16.04,18.04,19.10,20.04,and avoid the version 16.04,18.04,19.10,20.04; Upgrade opensuse leap to a higher version than 15.1,15.2,and avoid the version 15.1,15.2; Upgrade fedoraproject fedora to a higher version than 31,32,and avoid the version 31,32; Upgrade siemens simatic_itc1500_firmware to a higher version than 3.2.1.0,and avoid the version [3.0.0.0,3.2.1.0); Upgrade siemens simatic_itc1500_pro_firmware to a higher version than 3.2.1.0,and avoid the version [3.0.0.0,3.2.1.0); Upgrade siemens simatic_itc1900_firmware to a higher version than 3.2.1.0,and avoid the version [3.0.0.0,3.2.1.0); Upgrade siemens simatic_itc1900_pro_firmware to a higher version than 3.2.1.0,and avoid the version [3.0.0.0,3.2.1.0); Upgrade siemens simatic_itc2200_firmware to a higher version than 3.2.1.0,and avoid the version [3.0.0.0,3.2.1.0); Upgrade siemens simatic_itc2200_pro_firmware to a higher version than 3.2.1.0,and avoid the version [3.0.0.0,3.2.1.0)