Core Security - CoreLabsAdobe Acrobat Reader Acrord32.dll Use After Free Vulnerability
**Title:**Adobe Acrobat Reader Acrord32.dll Use After Free Vulnerability
**Advisory Id:**CORE-2010-0701
Advisory URL:http://www.coresecurity.com/content/adobe-acrobat-acrord23-reader-use-after-free
**Date published:**2010-10-05
**Date of last update:**2010-10-05
**Vendors contacted:**Adobe
**Release mode:**Coordinated release
**Class:**Use after free [CWE-416]
**Impact:**Code execution
**Remotely Exploitable:**Yes (client-side)
**Locally Exploitable:**No
CVE Name:CVE-2010-3627
**Bugtraq ID:**N/A
Adobe Acrobat Reader is prone to a use-after-free vulnerability due to an invalid usage of a released memory chunk. This vulnerability could be used by a remote attacker to execute arbitrary code, by enticing the user of Adobe Acrobat Reader to open a specially crafted file and click on PAGES thumbnails.
For further information about this issue look at the Adobe Security Bulletin and security blogs:
This vulnerability was discovered and researched by Ricardo Narvaja, from Core Security Technologies. This publication was coordinated by Fernando Russ.
Adobe Acrobat Reader is prone to a use-after-free vulnerability due to an invalid usage of a released memory chunk. A specially crafted .pdf
file containing special flash code triggers an ACCESS_VIOLATION
reading at address 0x00000030.
A more careful analysis of that code indicates that ESI points to a released chunk of memory. Exploitation is feasible forcing the allocation process of Adobe Acrobat Reader to reuse the chunk pointed by ESI with specially controlled data.
00EE10F8 MOV ECX,DWORD PTR DS:[ESI+1C] <-- ESI points to a previously released memory chunk.
00EE10FB MOV DWORD PTR SS:[EBP+78],EAX
00EE10FE MOV EAX,DWORD PTR DS:[ESI+18]
00EE1101 PUSH EAX
00EE1102 CALL DWORD PTR DS:[ECX+30] <-- The execution flow depends on the content of ECX. (ECX dependes on ESI)
The content of the CPU register while an ACCESS_VIOLATION
reading was triggered at 0x00EE1102,
EAX 00000000
ECX 00000000
EDX 014D0A40
EBX 00000000
ESP 0013F1BC
EBP 0013F24C
ESI 02D5782C
EDI 10A7C3D0
EIP 00EE1102
This vulnerability could result in arbitrary code execution, although it was not verified.
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://www.coresecurity.com/corelabs>.
Core Security Technologies develops strategic solutions that help security-conscious organizations worldwide develop and maintain a proactive process for securing their networks. The company’s flagship product, CORE IMPACT, is the most comprehensive product for performing enterprise security assurance testing. CORE IMPACT evaluates network, endpoint and end-user vulnerabilities and identifies what resources are exposed. It enables organizations to determine if current security investments are detecting and preventing attacks. Core Security Technologies augments its leading technology solution with world-class security consulting services, including penetration testing and software security auditing. Based in Boston, MA and Buenos Aires, Argentina, Core Security Technologies can be reached at 617-399-6980 or on the Web at <http://www.coresecurity.com>.
The contents of this advisory are copyright © 2010 Core Security Technologies and © 2010 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/>
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