## WAF是时候跟正则表达式说再见 破见 Part 1 Part 2 Part 3 ## 议题内容 正则表达式不适合用于构建WAF 现有WAF的解决方案 如何构建未来的WAF ## Part 1 ## 正则表达式不适合用于构建WAF ## WAF攻防研究之四个层次Bypass WAF ## 感性认识—误报和漏报难以平衡 关键字【waf】的搜索结果共112记录 |提交时间|标题| |2016-05-17|中国石油某电商SQL注入(waf绕过)| |2016-05-04|韩国本土最大电商linterpark全球站/主站存在sql注入/9库/大量表/双编码/有waf/可union| |2016-04-29|中石化某业务SQL注入漏洞（绕过WAF）| |2016-04-21|汽车安全之奔驰某站SQL注入/可影响大量客户信息(bypass waf)| |2016-04-21|虎扑体育某站注入（绕waf）| |2016 入需绕过WAF）| |2016-04-09|迅雷官方APP存在SQL注入（跨70库/艰难绕WAF）| |2016-04-05|绿盟WAF SQL注入检测bypass| |2016-03-28|宁波某p2p平台存在SQL注入漏洞（可绕过WAF）| |2016-03-28|申银万国证券mssql注射绕waf写shell| |2016-03-19|车易拍某系统SQL注入40W用户数据（绕过WAF）| |

行。 ## (2) WAF WAF 通过分析来自客户端的 HTTP 请求，并根据其规则库对其进行检查，以检测和阻止恶意攻击。在 Web 防护过程中，WAF 是一种专为保护 Web 应用设计的防火墙。它位于 Web 应用和 Internet 之间，能够监控、过滤并阻止 HTTP 流量中的恶意攻击，如 SQL 注入、XSS 和 CSRF 攻击等。在 API 防护过程中，WAF 可以提供实时监测和分析 可以提供实时监测和分析 API 的访问日志，并能够迅速发现异常行为。WAF 可以记录所有请求数据，包括来源 IP、用户代理、参数等，并能够根据事先设置的安全策略进行分析和识别。当异常行为被发现时，WAF 可以立即采取行动，根据预设的安全策略阻止恶意请求，从而快速响应和快速阻止攻击。 ## (3) API 网关 API 网关具有身份认证、访问控制、数据校验、限流熔断等功能，可以帮 助安全团队管理 API。但是，当所有后端服务的流量都必须通过 |SQL|Structured Query Language|结构化查询语言| |SSH|Secure Shell|安全外壳| |VLAN|Virtual Local Area Network|虚拟局域网| |WAF|Web Application Firewalls|网站应用级入侵防御系统| |XSS|Cross Site Scripting|跨站脚本攻击| ## 附录 B 参考文献 [1] 云原生产业联盟

create a minimal implementation of a build helper for the Waf build system. First, we need to create a recipe for the python_requires that will export waf_environment.py, where all the implementation of the import ConanFile from waf_environment import WafBuildEnvironment (continues on next page) (continued from previous page) ```python class PythonRequires(ConanFile): name = "waf-build-helper" version = "0.1" exports = "waf_environment.py" ``` As we said, the build helper is responsible for translating Conan settings to something that the build tool understands.

create a minimal implementation of a build helper for the Waf build system. First, we need to create a recipe for the python_requires that will export waf_environment.py, where all the implementation of the ConanFile from waf_environment import WafBuildEnvironment class PythonRequires(ConanFile): name = "waf-build-helper" version = "0.1" exports = "waf_environment.py" case, the build helper for Waf will create one file named waf_toolchain.py that will contain linker and compiler flags based on the Conan settings. To pass that information to Waf in the file, you have to

create a minimal implementation of a build helper for the Waf build system. First, we need to create a recipe for the python_requires that will export waf_environment.py, where all the implementation of the ConanFile from waf_environment import WafBuildEnvironment class PythonRequires(ConanFile): name = "waf-build-helper" version = "0.1" exports = "waf_environment.py" case, the build helper for Waf will create one file named waf_toolchain.py that will contain linker and compiler flags based on the Conan settings. To pass that information to Waf in the file, you have to

create a minimal implementation of a build helper for the Waf build system. First, we need to create a recipe for the python_requires that will export waf_environment.py, where all the implementation of the import ConanFile from waf_environment import WafBuildEnvironment (continues on next page) (continued from previous page) ```python class PythonRequires(ConanFile): name = "waf-build-helper" version = "0.1" exports = "waf_environment.py" ``` As we said, the build helper is responsible for translating Conan settings to something that the build tool understands.

iisadmin" 可停止服务器的IIS服务） ## 防护方法 ☑ 代码级防护 ☐ 验证输入 参数化SQL ☐ 输出检查 ☐ 使用存储过程 平台级别防护 ☐ 在运行期间防护：使用WAF、URL重写等 ☐ 配置数据库安全策略（权限配置、关闭默认账号、审计等） #### 3.2. 跨站脚本攻击 ## 概述 ## Cross Site Scripting（简写为XSS） ☐ 攻击 5e623a2507ab3ce487/p109_1.jpg) ## WEB应用防火墙 WEB应用防火墙(简称：WAF)，工作在网络应用层，对来自WEB应用程序客户端的各类请求进行内容检测和验证，确保其安全性与合法性，对非法的请求将予以实时阻断，从而对各类网站进行有效防护。 WAF产品应该具备以下功能： ☐ 针对各类WEB应用攻击的检测和防御能力，如SQL注入、跨站脚本等，满足对检测、防御能力在广度和深度上的要求 WEB应用漏洞扫描能力，加强WEB应用自身的安全性 ## WEB应用防火墙 ☐ 代表产品：昊天电子政务防护系统、绿盟WEB应用防火墙、梭子鱼应用防火墙、Imperva SecureGrid WEB应用防火墙…… 以昊天WAF产品为例：  ## WEB应用主机加固

source = 'hello.cc' 执行 node-waf configure build 将会创建您的扩展文件至 build/default/hello.node。 node-waf 是 http://code.google.com/p/waf/[WAF]，基于 python 的编译系统。node-waf 为使用者提供轻易。 所有 Node 扩展必须输出一函数 init ，并包含此声明：

a minimal implementation of a build helper for the Waf build system . First, we need to create a recipe for the python_requires that will export waf_environment.py, where all the implementation of the from conans import ConanFile from waf_environment import WafBuildEnvironment class PythonRequires(ConanFile): name = "waf-build-helper" version = "0.1" exports = "waf_environment.py" 12.4. Creating a custom case, the build helper for Waf will create one file named waf_toolchain.py that will contain linker and compiler flags based on the Conan settings. To pass that information to Waf in the file, you have to

create a minimal implementation of a build helper for the Waf build system. First, we need to create a recipe for the python_requires that will export waf_environment.py, where all the implementation of the import ConanFile from waf_environment import WafBuildEnvironment class PythonRequires(ConanFile): name = "waf-build-helper" version = "0.1" exports = "waf_environment.py" case, the build helper for Waf will create one file named waf_toolchain.py that will contain linker and compiler flags based on the Conan settings. To pass that information to Waf in the file, you have to