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
3. Vulnerability Description
Lattice Diamond Programmer  is vulnerable to client-side attacks, which can be exploited by remote attackers to run arbitrary code by sending specially crafted
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 . Given that this is a client-side vulnerability, affected users should not open untrusted
.xcf files using
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
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.
11. About CoreLabs
CoreLabs, the research center of Core Security Technologies, is charged with anticipating the future needs and requirements for information security technologies. We conduct our research in several important areas of computer security including system vulnerabilities, cyber attack planning and simulation, source code auditing, and cryptography. Our results include problem formalization, identification of vulnerabilities, novel solutions and prototypes for new technologies. CoreLabs regularly publishes security advisories, technical papers, project information and shared software tools for public use at: http://corelabs.coresecurity.com.
12. About Core Security Technologies
Core Security Technologies enables organizations to get ahead of threats with security test and measurement solutions that continuously identify and demonstrate real-world exposures to their most critical assets. Our customers can gain real visibility into their security standing, real validation of their security controls, and real metrics to more effectively secure their organizations.
Core Security's software solutions build on over a decade of trusted research and leading-edge threat expertise from the company's Security Consulting Services, CoreLabs and Engineering groups. Core Security Technologies can be reached at +1 (617) 399-6980 or on the Web at: http://www.coresecurity.com.
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 /legacy/files/attachments/core_security_advisories.asc.