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| public class VulnController {
private static Map<String, ScheduledJob> jobs = new HashMap();
private static final String[] JOB_BLACKLIST = new String[]{"java.net.URL", "javax.naming.InitialContext", "org.yaml.snakeyaml", "org.springframework", "org.apache", "rmi", "ldap", "ldaps", "http", "https"};
private static final String[] JOB_WHITELIST = new String[]{"com.jabaez.FLAG"};
@GetMapping({"/server"})
public Map<String, Object> getServerInfo() {
Map<String, Object> info = new HashMap();
info.put("javaHome", System.getProperty("java.home"));
info.put("javaVersion", System.getProperty("java.version"));
info.put("osName", System.getProperty("os.name"));
info.put("userDir", System.getProperty("user.dir"));
info.put("uploadDir", "/tmp/uploads");
Charset gbk = Charset.forName("GBK");
byte[] bytes = gbk.encode("你好").array();
System.out.println(Arrays.toString(bytes));
return info;
}
@PostMapping({"/upload"})
public Map<String, String> uploadFile(@RequestParam("file") MultipartFile file) {
Map<String, String> result = new HashMap();
try {
String uploadDir = "/tmp/uploads/";
File dir = new File(uploadDir);
if (!dir.exists()) {
dir.mkdirs();
}
String originalFilename = file.getOriginalFilename();
if (originalFilename == null) {
result.put("status", "error");
result.put("message", "文件名为空");
return result;
}
String filename = (new File(originalFilename)).getName();
if (filename.contains("..") || filename.contains("/") || filename.contains("\\") || filename.startsWith(".")) {
result.put("status", "error");
result.put("message", "非法文件名");
return result;
}
File dest = new File(uploadDir + filename);
String uploadPathCanonical = (new File(uploadDir)).getCanonicalPath();
String destCanonical = dest.getCanonicalPath();
if (!destCanonical.startsWith(uploadPathCanonical + File.separator)) {
result.put("status", "error");
result.put("message", "非法文件路径");
return result;
}
file.transferTo(dest);
result.put("status", "success");
result.put("path", dest.getAbsolutePath());
result.put("message", "文件上传成功");
} catch (Exception e) {
result.put("status", "error");
result.put("message", e.getMessage());
}
return result;
}
@PostMapping({"/job/add"})
public Map<String, Object> addJob(@RequestBody ScheduledJob job) {
Map<String, Object> result = new HashMap();
if (this.containsBlacklist(job.getInvokeTarget())) {
result.put("status", "error");
result.put("message", "包含非法字符");
return result;
} else if (!this.containsWhitelist(job.getInvokeTarget())) {
result.put("status", "error");
result.put("message", "目标不在白名单中");
return result;
} else {
jobs.put(job.getJobName(), job);
result.put("status", "success");
result.put("message", "任务添加成功");
result.put("jobId", job.getJobName());
return result;
}
}
@PostMapping({"/job/run/{jobName}"})
public Map<String, Object> runJob(@PathVariable String jobName) {
Map<String, Object> result = new HashMap();
ScheduledJob job = (ScheduledJob)jobs.get(jobName);
if (job == null) {
result.put("status", "error");
result.put("message", "任务不存在");
return result;
} else {
try {
this.invokeMethod(job.getInvokeTarget());
result.put("status", "success");
result.put("message", "任务执行成功");
} catch (Exception e) {
result.put("status", "error");
result.put("message", e.getMessage());
result.put("stackTrace", e.getStackTrace()[0].toString());
}
return result;
}
}
private boolean containsBlacklist(String str) {
if (str == null) {
return false;
} else {
String lowerStr = str.toLowerCase();
for(String blackItem : JOB_BLACKLIST) {
if (lowerStr.contains(blackItem.toLowerCase())) {
return true;
}
}
return false;
}
}
private boolean containsWhitelist(String str) {
if (str == null) {
return false;
} else {
for(String whiteItem : JOB_WHITELIST) {
if (str.contains(whiteItem)) {
return true;
}
}
return false;
}
}
private Object invokeMethod(String invokeTarget) throws Exception {
int hashIndex = invokeTarget.indexOf(35);
if (hashIndex == -1) {
throw new IllegalArgumentException("Invalid format, expected: className#methodName(params)");
} else {
String className = invokeTarget.substring(0, hashIndex);
String methodAndParams = invokeTarget.substring(hashIndex + 1);
int paramStart = methodAndParams.indexOf(40);
int paramEnd = methodAndParams.lastIndexOf(41);
if (paramStart != -1 && paramEnd != -1) {
String methodName = methodAndParams.substring(0, paramStart);
String paramStr = methodAndParams.substring(paramStart + 1, paramEnd);
Class<?> clazz = Class.forName(className);
List<Object> paramValues = new ArrayList();
List<Class<?>> paramTypes = new ArrayList();
if (!paramStr.trim().isEmpty()) {
String[] params = this.splitParams(paramStr);
for(String param : params) {
param = param.trim();
if (param.startsWith("'") && param.endsWith("'")) {
String value = param.substring(1, param.length() - 1);
paramValues.add(value);
paramTypes.add(String.class);
} else if (param.equals("null")) {
paramValues.add((Object)null);
paramTypes.add(String.class);
} else if (param.matches("\\d+")) {
paramValues.add(Integer.parseInt(param));
paramTypes.add(Integer.TYPE);
} else if (!param.equals("true") && !param.equals("false")) {
paramValues.add(param);
paramTypes.add(String.class);
} else {
paramValues.add(Boolean.parseBoolean(param));
paramTypes.add(Boolean.TYPE);
}
}
}
try {
Method method = clazz.getMethod(methodName, (Class[])paramTypes.toArray(new Class[0]));
if (Modifier.isStatic(method.getModifiers())) {
return method.invoke((Object)null, paramValues.toArray());
} else {
Object instance = clazz.newInstance();
return method.invoke(instance, paramValues.toArray());
}
} catch (NoSuchMethodException var18) {
Method method = clazz.getDeclaredMethod(methodName, (Class[])paramTypes.toArray(new Class[0]));
method.setAccessible(true);
if (Modifier.isStatic(method.getModifiers())) {
return method.invoke((Object)null, paramValues.toArray());
} else {
Object instance = clazz.newInstance();
return method.invoke(instance, paramValues.toArray());
}
}
} else {
throw new IllegalArgumentException("Invalid method format");
}
}
}
private String[] splitParams(String paramStr) {
List<String> params = new ArrayList();
int bracketLevel = 0;
int start = 0;
for(int i = 0; i < paramStr.length(); ++i) {
char c = paramStr.charAt(i);
if (c != '(' && c != '{' && c != '[') {
if (c != ')' && c != '}' && c != ']') {
if (c == ',' && bracketLevel == 0) {
params.add(paramStr.substring(start, i));
start = i + 1;
}
} else {
--bracketLevel;
}
} else {
++bracketLevel;
}
}
if (start < paramStr.length()) {
params.add(paramStr.substring(start));
}
return (String[])params.toArray(new String[0]);
}
static class ScheduledJob {
private String jobName;
private String invokeTarget;
private String cronExpression;
public String getJobName() {
return this.jobName;
}
public void setJobName(String jobName) {
this.jobName = jobName;
}
public String getInvokeTarget() {
return this.invokeTarget;
}
public void setInvokeTarget(String invokeTarget) {
this.invokeTarget = invokeTarget;
}
public String getCronExpression() {
return this.cronExpression;
}
public void setCronExpression(String cronExpression) {
this.cronExpression = cronExpression;
}
}
}
|
