CVE:CVE-2020-8794
CNNVD:CNNVD-202002-1169
OpenSMTPD 6.6.4之前版本中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 opensmtpd opensmtpd to a higher version than 6.6.4,and avoid the version (,6.6.4); Upgrade canonical ubuntu_linux to a higher version than 18.04,19.10,and avoid the version 18.04,19.10; Upgrade fedoraproject fedora to a higher version than 31,32,and avoid the version 31,32; Upgrade debian debian_linux to a higher version than 9.0,10.0,and avoid the version 9.0,10.0