feat: add /CommandInject2.java #1
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Sequence Diagram(s)sequenceDiagram
participant C as Client
participant CI as CommandInject Controller
participant PB as ProcessBuilder
participant WS as WebUtils
C->>CI: GET /codeInject?filepath=...
CI->>PB: 执行 "ls -la <filepath>"
PB->>WS: 转换输出流
WS-->>CI: 返回命令结果
CI-->>C: 返回结果
sequenceDiagram
participant C as Client
participant CI as CommandInject Controller
participant PB as ProcessBuilder
participant WS as WebUtils
C->>CI: GET /codeInjectSec?filepath=...
alt 安全过滤失败
CI-->>C: 返回安全过滤提示信息
else 安全过滤通过
CI->>PB: 执行 "ls -la <filepath>"
PB->>WS: 转换输出流
WS-->>CI: 返回命令结果
CI-->>C: 返回结果
end
sequenceDiagram
participant C as Client
participant CI as CommandInject Controller
participant PB as ProcessBuilder
participant WS as WebUtils
C->>CI: GET /codeInjectHost (包含 host 请求头)
CI->>PB: 执行 "curl <host>"
PB->>WS: 转换输出流
WS-->>CI: 返回命令结果
CI-->>C: 返回结果
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Actionable comments posted: 2
🧹 Nitpick comments (1)
src/main/java/org/joychou/controller/CommandInject2.java (1)
13-14: 注意类文件命名与类名保持一致
目前类名为CommandInject，而文件名为CommandInject2.java，建议保持一致以确保在大型工程中具有可读性和可维护性。
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📒 Files selected for processing (1)
src/main/java/org/joychou/controller/CommandInject2.java(1 hunks)
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src/main/java/org/joychou/controller/CommandInject2.java (1)
51-63: 安全过滤已实现，但需考虑更严格的约束
codeInjectSec方法使用了SecurityUtil.cmdFilter()来过滤输入，这种做法相对安全。但仍需确认SecurityUtil.cmdFilter()的过滤规则是否全面。此外，在生产环境中最好限制可能的命令类型，或使用更安全的库函数来操作文件系统。
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| @GetMapping("/codeinject") | ||
| public String codeInject(String filepath) throws IOException { | ||
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| String[] cmdList = new String[]{"sh", "-c", "ls -la " + filepath}; | ||
| ProcessBuilder builder = new ProcessBuilder(cmdList); | ||
| builder.redirectErrorStream(true); | ||
| Process process = builder.start(); | ||
| return WebUtils.convertStreamToString(process.getInputStream()); | ||
| } |
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存在命令注入风险，建议加强参数过滤
codeInject 方法直接将 filepath 拼接到 ls -la 命令中。如果用户传递了恶意命令或分隔符，可能导致任意命令执行。应对输入参数进行严格校验或过滤，或使用更安全的操作方式（如 ProcessBuilder 的可变参数列表而非字符串拼接），示例如下：
- String[] cmdList = new String[]{"sh", "-c", "ls -la " + filepath};
+ // 示例：采用验证后再拼接参数，或将命令和参数分开传递
+ String safePath = SecurityUtil.cmdFilter(filepath);
+ if (safePath == null) {
+ throw new IllegalArgumentException("非法参数");
+ }
+ String[] cmdList = new String[]{"sh", "-c", "ls", "-la", safePath};Committable suggestion skipped: line range outside the PR's diff.
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Docstrings generation was requested by @cccfeng. * #1 (comment) The following files were modified: * `src/main/java/org/joychou/controller/CommandInject2.java`
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Note Generated docstrings for this pull request at #5 |
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Actionable comments posted: 2
♻️ Duplicate comments (1)
src/main/java/org/joychou/controller/CommandInject2.java (1)
18-32:⚠️ Potential issue存在命令注入风险，建议加强参数过滤
codeInject方法直接将filepath拼接到ls -la命令中。如果用户传递了恶意命令或分隔符，可能导致任意命令执行。应对输入参数进行严格校验或过滤，或使用更安全的操作方式（如ProcessBuilder的可变参数列表而非字符串拼接）。- String[] cmdList = new String[]{"sh", "-c", "ls -la " + filepath}; + // A. 参数过滤方案 + String safePath = SecurityUtil.cmdFilter(filepath); + if (safePath == null) { + throw new IllegalArgumentException("非法参数"); + } + String[] cmdList = new String[]{"sh", "-c", "ls -la " + safePath}; + // B. 或使用更安全的方式，避免shell解释器 + // String[] cmdList = new String[]{"ls", "-la", filepath};
🧹 Nitpick comments (2)
src/main/java/org/joychou/controller/CommandInject2.java (2)
56-67: 已实现命令注入防护，但可进一步改进该方法使用
SecurityUtil.cmdFilter对文件路径进行过滤，是一个良好的安全实践。但仍有改进空间：
- 建议添加日志记录可疑的输入尝试，便于安全监控
- 类似于前面的建议，考虑使用Java原生文件操作API而非shell命令
if (null == filterFilePath) { + logger.warn("可疑的命令注入尝试: {}", filepath); return "Bad boy. I got u."; }- String[] cmdList = new String[]{"sh", "-c", "ls -la " + filterFilePath}; - ProcessBuilder builder = new ProcessBuilder(cmdList); - builder.redirectErrorStream(true); - Process process = builder.start(); - return WebUtils.convertStreamToString(process.getInputStream()); + // 使用Java文件API + File dir = new File(filterFilePath); + StringBuilder result = new StringBuilder(); + if (dir.exists() && dir.isDirectory()) { + File[] files = dir.listFiles(); + if (files != null) { + for (File file : files) { + result.append(file.getName()).append("\t") + .append(file.length()).append("\t") + .append(new Date(file.lastModified())).append("\n"); + } + } + } + return result.toString();
1-69: 建议添加防御代码与单元测试该类实现了命令执行功能，但缺少全面的防御机制和异常处理：
- 建议添加全局异常处理，捕获并记录异常情况
- 建议为这些高风险操作添加单元测试，确保安全过滤生效
- 考虑添加访问控制措施，限制这些敏感接口的访问权限
+ // 在类级别添加更多的安全控制 + @PreAuthorize("hasRole('ADMIN')") // 需要添加Spring Security依赖 @RestController public class CommandInject {@GetMapping("/codeinject") + // 记录访问并设置超时 + @Timeout(value = 5, unit = TimeUnit.SECONDS) public String codeInject(String filepath) throws IOException { + logger.info("代码执行请求: {}", filepath); + try { String[] cmdList = new String[]{"sh", "-c", "ls -la " + filepath}; // ...其余代码 + } catch (Exception e) { + logger.error("命令执行异常", e); + throw new RuntimeException("命令执行失败"); + } }
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
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📒 Files selected for processing (1)
src/main/java/org/joychou/controller/CommandInject2.java(1 hunks)
🔇 Additional comments (2)
src/main/java/org/joychou/controller/CommandInject2.java (2)
1-12: 包和导入声明结构清晰代码导入了适当的库以支持Web控制器功能、安全工具、日志记录和HTTP请求处理。导入结构组织良好。
13-16: 类定义和日志器初始化正确类使用了
@RestController注解正确地定义为Spring控制器，日志器也已适当初始化。
| import java.io.IOException; | ||
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| @RestController | ||
| public class CommandInject { |
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类名与文件名不匹配，应当保持一致
文件名为CommandInject2.java，但类名为CommandInject。应确保类名与文件名一致，避免混淆。
- public class CommandInject {
+ public class CommandInject2 {📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| public class CommandInject { | |
| public class CommandInject2 { |
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| /** | ||
| * Host Injection | ||
| * Host: hacked by joychou;cat /etc/passwd | ||
| * http://localhost:8080/codeinject/host | ||
| */ | ||
| @GetMapping("/codeinject/host") | ||
| public String codeInjectHost(HttpServletRequest request) throws IOException { | ||
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| String host = request.getHeader("host"); | ||
| logger.info(host); | ||
| // 使用白名单或其他防护措施，如仅允许合法域名 | ||
| String safeHost = SecurityUtil.hostFilter(host); | ||
| if (safeHost == null) { | ||
| throw new IllegalArgumentException("非法或危险的host"); | ||
| } | ||
| String[] cmdList = new String[]{"sh", "-c", "curl " + safeHost}; | ||
| ProcessBuilder builder = new ProcessBuilder(cmdList); | ||
| builder.redirectErrorStream(true); | ||
| Process process = builder.start(); | ||
| return WebUtils.convertStreamToString(process.getInputStream()); | ||
| } |
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🛠️ Refactor suggestion
主机头过滤已实现，但仍可优化命令执行方式
代码已通过SecurityUtil.hostFilter实现了主机头的过滤，增加了安全性。但从最佳实践来看，仍然存在以下问题：
- 即使经过过滤，仍然使用shell命令执行curl，这是不必要的风险
- 建议使用Java内置的HTTP客户端库替代shell命令执行curl
- String[] cmdList = new String[]{"sh", "-c", "curl " + safeHost};
- ProcessBuilder builder = new ProcessBuilder(cmdList);
- builder.redirectErrorStream(true);
- Process process = builder.start();
- return WebUtils.convertStreamToString(process.getInputStream());
+ // 使用Java的HTTP客户端库
+ URL url = new URL("http://" + safeHost);
+ HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+ return WebUtils.convertStreamToString(conn.getInputStream());📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| /** | |
| * Host Injection | |
| * Host: hacked by joychou;cat /etc/passwd | |
| * http://localhost:8080/codeinject/host | |
| */ | |
| @GetMapping("/codeinject/host") | |
| public String codeInjectHost(HttpServletRequest request) throws IOException { | |
| String host = request.getHeader("host"); | |
| logger.info(host); | |
| // 使用白名单或其他防护措施，如仅允许合法域名 | |
| String safeHost = SecurityUtil.hostFilter(host); | |
| if (safeHost == null) { | |
| throw new IllegalArgumentException("非法或危险的host"); | |
| } | |
| String[] cmdList = new String[]{"sh", "-c", "curl " + safeHost}; | |
| ProcessBuilder builder = new ProcessBuilder(cmdList); | |
| builder.redirectErrorStream(true); | |
| Process process = builder.start(); | |
| return WebUtils.convertStreamToString(process.getInputStream()); | |
| } | |
| /** | |
| * Host Injection | |
| * Host: hacked by joychou;cat /etc/passwd | |
| * http://localhost:8080/codeinject/host | |
| */ | |
| @GetMapping("/codeinject/host") | |
| public String codeInjectHost(HttpServletRequest request) throws IOException { | |
| String host = request.getHeader("host"); | |
| logger.info(host); | |
| // 使用白名单或其他防护措施，如仅允许合法域名 | |
| String safeHost = SecurityUtil.hostFilter(host); | |
| if (safeHost == null) { | |
| throw new IllegalArgumentException("非法或危险的host"); | |
| } | |
| // 使用Java的HTTP客户端库 | |
| URL url = new URL("http://" + safeHost); | |
| HttpURLConnection conn = (HttpURLConnection) url.openConnection(); | |
| return WebUtils.convertStreamToString(conn.getInputStream()); | |
| } |
|
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