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rhizobia_j's Introduction

项目简介

本项目包含两部分: java安全编码规范和JAVA安全SDK,SDK介绍详见下述。

项目结构

├── LICENSE
├── README.md
├── pom.xml
└── src
    ├── main
    │   ├── java
    │   │   └── com
    │   │       └── immomo
    │   │           └── rhizobia
    │   │               └── rhizobia_J
    │   │                   ├── base
    │   │                   │   ├── SqliSanitiser.java
    │   │                   │   └── WhiteChecker.java
    │   │                   ├── crypto
    │   │                   │   ├── AESUtils.java
    │   │                   │   └── RSAUtils.java
    │   │                   ├── csrf
    │   │                   │   └── CSRFTokenUtils.java
    │   │                   ├── deserialization
    │   │                   │   └── SecureObjectInputStream.java
    │   │                   ├── extra
    │   │                   │   ├── LICENSE
    │   │                   │   ├── LICENSE-CONTENT
    │   │                   │   ├── LICENSE-README
    │   │                   │   ├── codecs
    │   │                   │   │   ├── AbstractCharacterCodec.java
    │   │                   │   │   ├── AbstractCodec.java
    │   │                   │   │   ├── AbstractIntegerCodec.java
    │   │                   │   │   ├── AbstractPushbackSequence.java
    │   │                   │   │   ├── Codec.java
    │   │                   │   │   ├── DB2Codec.java
    │   │                   │   │   ├── HTMLEntityCodec.java
    │   │                   │   │   ├── HashTrie.java
    │   │                   │   │   ├── JavaScriptCodec.java
    │   │                   │   │   ├── MySQLCodec.java
    │   │                   │   │   ├── OracleCodec.java
    │   │                   │   │   ├── PushBackSequenceImpl.java
    │   │                   │   │   ├── PushbackSequence.java
    │   │                   │   │   ├── PushbackString.java
    │   │                   │   │   └── Trie.java
    │   │                   │   └── commons
    │   │                   │       ├── CollectionsUtil.java
    │   │                   │       ├── EncoderConstants.java
    │   │                   │       ├── NullSafe.java
    │   │                   │       ├── RandomCreater.java
    │   │                   │       └── StringUtilities.java
    │   │                   ├── sqli
    │   │                   │   ├── DB2Sanitiser.java
    │   │                   │   ├── MysqlSanitiser.java
    │   │                   │   └── OracleSanitiser.java
    │   │                   ├── ssrf
    │   │                   │   └── SSRFWhiteChecker.java
    │   │                   ├── urlredirection
    │   │                   │   └── UrlRedirectionWhiteChecher.java
    │   │                   ├── xss
    │   │                   │   └── XssSanitiser.java
    │   │                   └── xxe
    │   │                       └── XmlUtils.java
    │   └── resources
    │       └── log4j.properties
    └── test
        └── java
            └── com
                └── immomo
                    └── rhizobia
                        └── rhizobia_J
                            ├── AESUtilsTest.java
                            ├── CSRFTokenUtilsTest.java
                            ├── DB2SanitiserTest.java
                            ├── MysqlSanitiserTest.java
                            ├── OracleSanitiserTest.java
                            ├── SSRFWhiteCheckerTest.java
                            ├── SafeClass.java
                            ├── SecureObjectInputStreamTest.java
                            ├── TestBean.java
                            ├── UnsafeClass.java
                            ├── UrlRedirectionWhiteChecherTest.java
                            ├── XmlUtilsTest.java
                            └── XssEncoderTest.java

目录

1、引用java security library

环境需求

  • Java 8
  • Maven 3

a、编译jar包:

    mvn -Dmaven.test.skip=true clean install

b、引入java security library:

在target目录中找到target/rhizobia_J-1.0.jar,导入工程中

需要在自己的maven工程pom.xml中加入如下依赖

    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.11</version>
    </dependency>

2、SQL注入防护

a、确认是连接的是哪种数据库,选择对应的数据库编码,目前支持数据库包括:MySQL Oracle DB2:

    import com.immomo.rhizobia.rhizobia_J.sqli.MysqlSanitiser;
    //import com.immomo.rhizobia.rhizobia_J.sqli.OracleSanitiser;
    //import com.immomo.rhizobia.rhizobia_J.sqli.DB2Sanitiser;
    
    MysqlSanitiser sqlTool = MysqlSanitiser.getInstance();

b、对sql语句中拼接的参数进行转义:

    String id = "1' or '1'='1' #";
    String idEncode = sqlTool.mysqlSanitise(id);
    String query = "SELECT NAME FROM users WHERE id = '" + idEncode + "'";

使用order by、group by等需要转换列名时,需使用带boolean参数

    //保证列名中的下划线不被转义
    String columnName = "user_name";
    String columnNameEncode = sqlTool.mysqlSanitise(columnName, true);
    query = "SELECT NAME FROM users order by " + columnNameEncode ;

c、转义前后对比:

    转义前:SELECT NAME FROM users WHERE id = '1' or '1'='1' #'
    转义后:SELECT NAME FROM users WHERE id = '1\' or \'1\'\=\'1\' \#'

d、表名列名转义前后对比:

    转义前:SELECT NAME FROM users order by user_name
    转义后:SELECT NAME FROM users order by user_name
    转义前:SELECT NAME FROM users order by user-name
    转义后:SELECT NAME FROM users order by user\-name

3、xss防护

a、调用XssSanitiser单例:

    import com.immomo.rhizobia.rhizobia_J.xss.XssSanitiser;
    
    XssSanitiser xssFilter = XssSanitiser.getInstance();

b、如果输出到html body:

    String ret = xssFilter.encodeForHTML(oriString);

过滤前后对比:

    过滤前:<script> alert('xss') </script>
    过滤后:&lt;script&gt;alert&#x28;&#x27;xss&#x27;&#x29;&lt;&#x2f;script&gt;

c、如果输出到html标签的属性(多了对空字符的过滤):

    String ret = xssFilter.encodeForHTMLAttribute(oriString);

过滤前后对比:

    过滤前:<script> alert('xss') </script>
    过滤后:&lt;script&gt;&#x20;alert&#x28;&#x27;xss&#x27;&#x29;&#x20;&lt;&#x2f;script&gt;

d、如果输出到JavaScript代码块中:

    String ret = xssFilter.encodeForJavaScript(oriString);

过滤前后对比:

    过滤前:alert('xss');
    过滤后:alert\x28\x27xss\x27\x29\x3B

4、url重定向防护

a、调用UrlRedirectionWhiteChecher单例:

    import com.immomo.rhizobia.rhizobia_J.urlredirection.UrlRedirectionWhiteChecher;
    
    UrlRedirectionWhiteChecher urlChecker = UrlRedirectionWhiteChecher.getInstance();

b、自定义白名单:

    List<String> whitelist = new ArrayList<String>();
    String white1=".trust1.com";
    String white2=".trust2.com";
    
    //setWhiteList会先清空原有白名单列表
    //在原有基础上新增白名单,使用addWhiteList(whitelist)
    urlChecker.setWhiteList(whitelist);

c、校验url:

    try{
        boolean isWhite = urlChecker.verifyURL(url.trim());
    } catch (Exception e) {
        ...
    }

5、SSRF防护

a、调用SSRFWhiteChecker单例,与前面url重定向类似:

    import com.immomo.rhizobia.rhizobia_J.ssrf.SSRFWhiteChecker;
    
    SSRFWhiteChecker ssrfChecker = SSRFWhiteChecker.getInstance();

b、自定义白名单:

    List<String> whitelist = new ArrayList<String>();
    String white1=".trust1.com";
    String white2=".trust2.com";
    
    //setWhiteList会先清空原有白名单列表
    //在原有基础上新增白名单,使用addWhiteList(whitelist)
    ssrfChecker.setWhiteList(whitelist);

c、校验url:

    try{
        boolean isWhite = ssrfChecker.verifyURL(url.trim());
    } catch (Exception e) {
        ...
    }

6、CSRF防护

a、随机算出csrf token,并且每次生成随机值都不一样(实测结果连续生成1000亿次无重复):

    import com.immomo.rhizobia.rhizobia_J.csrf.CSRFTokenUtils;

    CSRFTokenUtils csrfInstance = CSRFTokenUtils.getInstance();
    String token = csrfInstance.resetCsrfToken(32);

b、后端保存生成的token,以待校验(可以采用数据库、分布存储等任意存储手段)

c、前端页面加上hidden字段

form中加入csrf token的hidden字段:

    <input name="${(_csrf.parameterName)!}" value="${(_csrf.token)!}" type="hidden">

ajax中加入csrf头

    xhr.setRequestHeader("${_csrf.headerName}", "${_csrf.token}");

d、当前端向后端发送请求时,请求header中携带token,后端收到后与之前存储的token进行校验

7、readObject反序列化漏洞防护

a、选择适当的构造函数初始化,自定义白名单:

使用SecureObjectInputStream中适当的构造函数,增加自定义的白名单

    import com.immomo.rhizobia.rhizobia_J.deserialization.SecureObjectInputStream;

    SecureObjectInputStream(InputStream in, String[] classlist)
    SecureObjectInputStream(InputStream in, List<String> classlist)

b、使用安全的类SecureObjectInputStream,恢复非白名单中类的对象时会抛出异常:

    List<String> classlist = new ArrayList<String>();
    classlist.add(SafeClass.class.toString());
    
    try{   
        //考虑如果白名单为空时会影响正常判断逻辑,所以此处会抛出异常
        SecureObjectInputStream ois = new SecureObjectInputStream(fis, classlist);
        
        //使用安全的SecureObjectInputStream恢复对象时会抛出exception
        UnsafeClass objectFromDisk = (UnsafeClass)ois.readObject();
    } catch (Exception e) {
        ...
    }

8、xxe防护

8.1、解析xml内容为Document

a、初始化时注意xml编码格式:

    import com.immomo.rhizobia.rhizobia_J.xxe.XmlUtils;
    //如果xml格式包含外部实体,会抛异常
    try{
        Document doc =  XmlUtils.getInstance().newDocument(xmlFile, "utf-8");
    } catch (Exception e) {
        ...
    }

b、使用生成的Document对象:

    Node notifyNode = doc.getFirstChild();
    NodeList list = notifyNode.getChildNodes();
    for (int i = 0, length = list.getLength(); i < length; i++) {
        Node n = list.item(i);
        String nodeName = n.getNodeName();
        String nodeContent = n.getTextContent();
        System.out.println(nodeName.toString() + "    " + nodeContent.toString());
    }

8.2、解析xml内容为Bean

a、自定义TestBean,然后调用converyToJavaBean解析:

    import com.immomo.rhizobia.rhizobia_J.xxe.XmlUtils;

    //如果xml格式包含外部实体,会抛异常
    XmlUtils xmlParser =  XmlUtils.getInstance();
    try {
        TestBean testbean = (TestBean)xmlParser.converyToJavaBean(xmlFile, TestBean.class);
    } catch (Exception e) {
        ...
    }

b、使用生成的bean对象:

    testbean.getTo()
    testbean.getFrom()
    testbean.getHeading()
    testbean.getBody()

9、AES加解密

#### a、调用AESUtils:
    import com.immomo.rhizobia.rhizobia_J.crypto.AESUtils;
    
    AESUtils aesInstance = AESUtils.getInstance(String aesKey, String secretKey, String aesMode);
    /**
    参数说明:
        aesKey:     用于生成密钥的原始字符串,推荐使用session/id,具有唯一性
        secretKey:  加解密双方约定的secret
        aesMode:    值为null时,默认采用"AES/CBC/PKCS5Padding"
    */
    AESUtils aesInstance = AESUtils.getInstance("843739488","TcmEqGzSpH5S2VgoUix7HJ9cwqCofoUD",null);

b、加密

    String orginText = "10000";
    
    byte[] ciphertext = aesInstance.Encrypt(orginText);
    //由于返回是byte流,所以如果需要base64编码或转换成Hex,需另做处理
    String encryptRet = new BASE64Encoder().encode(ciphertext);

c、解密

    //同样,如果加密内容用base64编码或转换成Hex,解密时需另做处理
    byte[] encrypted = new BASE64Decoder().decodeBuffer(encryptRet);
    String DeString = aesInstance.Decrypt(encrypted);

10、RSA加解密

#### a、调用RSAUtils:
    import com.immomo.rhizobia.rhizobia_J.crypto.RSAUtils;
    
    RSAUtils rsaInstance = RSAUtils.getInstance(priKeyPath, pubKeyPath);
    /**
    参数说明:目前证书支持 PEM 格式
        priKeyPath:  openssl生成的私钥地址
        pubKeyPath:  openssl生成的公钥地址
    */
    String priKeyPath = "/tmp/pri.key";
    String pubKeyPath = "/tmp/pub.key";
    RSAUtils rsaInstance = RSAUtils.getInstance(priKeyPath, pubKeyPath);

b、加密

    String plaintext = "123";

    byte[] ciphertext = rsaInstance.encrypt(plaintext);
    //与aes一样返回是byte流,所以如果需要base64编码或转换成Hex,需另做处理
    String encryptRet = new BASE64Encoder().encode(ciphertext);

c、解密

    //同样,如果加密内容用base64编码或转换成Hex,解密时需另做处理
    byte[] encrypted = new BASE64Decoder().decodeBuffer(encryptRet);
    String plaintext = rsaInstance.decrypt(ciphertext);

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