CVE:CVE-2020-8793
CNNVD:CNNVD-202002-1168
OpenSMTPD 6.6.4之前版本中的makemap.c文件和smtpd.c文件存在安全漏洞。攻击者可借助特制的参数利用该漏洞读取任意文件的第一行。
solution:Upgrade opensmtpd opensmtpd to a higher version than 6.6.4,and avoid the version (,6.6.4); Upgrade fedoraproject fedora to a higher version than 32,and avoid the version 32; Upgrade canonical ubuntu_linux to a higher version than 18.04,19.10,and avoid the version 18.04,19.10