CVE:CVE-2020-8159
CNNVD:CNNVD-202005-657
actionpack_page-caching gem v1.2.1之前版本存在路径遍历漏洞。攻击者可利用该漏洞将任意文件写入Web服务器上，进而执行代码。
solution:Upgrade rubyonrails actionpack_page-caching to a higher version than 1.2.1,and avoid the version (,1.2.1); Upgrade debian debian_linux to a higher version than 9.0,and avoid the version 9.0