CVE-2023-21939 PoC — Oracle Java SE和Oracle GraalVM 安全漏洞

Source

https://github.com/Y4Sec-Team/CVE-2023-21939

Associated Vulnerability

Title:Oracle Java SE和Oracle GraalVM 安全漏洞 (CVE-2023-21939)
Description:Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Swing). Supported versions that are affected are Oracle Java SE: 8u361, 8u361-perf, 11.0.18, 17.0.6, 20; Oracle GraalVM Enterprise Edition: 20.3.9, 21.3.5 and 22.3.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

Description

JDK CVE-2023-21939

Readme

## JDK CVE-2023-21939

[文章链接](https://mp.weixin.qq.com/s?__biz=MzkzOTQzOTE1NQ==&mid=2247483750&idx=1&sn=12a793075d0a8713bbfb4341b3591628&chksm=c2f1a43af5862d2cc898be9e4b43b24d24b29173501d3c10d812a8fcb7dd25d858e3095969ea#rd)

This is JDK CVE-2023-21939

Use JDK version lower than 8u371

### JDK + Apache XML Graphics

```xml
<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-swing</artifactId>
    <version>1.15</version>
</dependency>
```

How to reproduce this RCE:

(1) Run XmlServer.java 

(2) Run JarServer.java

(3) Run JarRCE.java for Test and successfully RCE

Screenshot:

![](imgs/001.png)

### JDK + Apache XML Graphics + Mozilla Rhino

```xml
<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-swing</artifactId>
    <version>1.15</version>
</dependency>
<dependency>
    <groupId>org.mozilla</groupId>
    <artifactId>rhino</artifactId>
    <version>1.7.10</version>
</dependency>
```

How to reproduce this RCE:

(1) Run XmlServer.java

(2) Run JSRCE.java for Test and successfully RCE

Screenshot:

![](imgs/002.png)

File Snapshot


 [4.0K]  /data/pocs/d59f0107779e203f20d028777b2da24033f22a97
├── [4.0K]  imgs
│   ├── [ 53K]  001.png
│   └── [ 60K]  002.png
├── [1.1K]  pom.xml
├── [1.1K]  README.md
└── [4.0K]  src
    └── [4.0K]  main
        ├── [4.0K]  java
        │   ├── [ 766]  Exploit.java
        │   └── [4.0K]  me
        │       └── [4.0K]  n1ar4
        │           ├── [4.0K]  exploit
        │           │   ├── [ 869]  JarRCE.java
        │           │   ├── [ 867]  JSRCE.java
        │           │   └── [ 718]  SerUtil.java
        │           ├── [1.8K]  JarServer.java
        │           ├── [ 649]  Main.java
        │           └── [2.5K]  XmlServer.java
        └── [4.0K]  resources
            └── [1.6K]  exploit.jar

8 directories, 12 files

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