从上个礼拜开始,公司的安全小组就开始排查公司项目的安全性,首屈一指的就是xss问题,为此我总结了下我的经验。
1、对后台程序的输出数据做html编码处理,前端做简单的替换处理
2、如果业务需要,后台可以使用HtmlSanitizer第三方类库(该库直接依赖于.net standard,因此可在dotnet core下引入)来做白名单过滤,强烈推荐!富文本编辑器传到后台的数据会加上dom节点,同时是经过了html编码处理的,这点要注意、
CreateDefaultBuilder源码
代码语言:javascript复制public static IWebHostBuilder CreateDefaultBuilder(string[] args)
{
var builder = new WebHostBuilder()
.UseKestrel()
.UseContentRoot(Directory.GetCurrentDirectory())
.ConfigureAppConfiguration((hostingContext, config) =>
{
var env = hostingContext.HostingEnvironment;
config.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
.AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true, reloadOnChange: true);
if (env.IsDevelopment())
{
var appAssembly = Assembly.Load(new AssemblyName(env.ApplicationName));
if (appAssembly != null)
{
config.AddUserSecrets(appAssembly, optional: true);
}
}
config.AddEnvironmentVariables();
if (args != null)
{
config.AddCommandLine(args);
}
})
.ConfigureLogging((hostingContext, logging) =>
{
logging.UseConfiguration(hostingContext.Configuration.GetSection("Logging"));
logging.AddConsole();
logging.AddDebug();
})
.UseIISIntegration()
.UseDefaultServiceProvider((context, options) =>
{
options.ValidateScopes = context.HostingEnvironment.IsDevelopment();
})
.ConfigureServices(services =>
{
services.AddTransient<IConfigureOptions<KestrelServerOptions>, KestrelServerOptionsSetup>();
});
return builder;
}