[FD] IconLover v5.4.5 - Stack Buffer Overflow Vulnerability

Document Title: =============== IconLover v5.4.5 - Stack Buffer Overflow Vulnerability References (Source): ==================== http://ift.tt/1h256rL Release Date: ============= 2015-09-28 Vulnerability Laboratory ID (VL-ID): ==================================== 1609 Common Vulnerability Scoring System: ==================================== 7.1 Product & Service Introduction: =============================== IconLover is a powerful, yet easy to use icon editor for making your own icons for any operating system, including Windows, Mac OS, UNIX, Android and iOS. It creates native Windows icons (ICO format) of all sizes, up to 768x768 used in Windows 10, and native MacOS icons (ICNS format) up to 1024x1024 pixels (this size is used in the latest Mac OS X versions). UNIX/Linux, Android and iOS use icons in PNG format which is fully supported by IconLover - you can create icons in this format from scratch or convert the existing Windows and Mac OS icons to PNG. (Copy of the Homepage: http://ift.tt/1P0Zagv ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered a buffer overflow vulnerability in the IconLover v5.4.2 and v5.4.5 software. Vulnerability Disclosure Timeline: ================================== 2015-09-28: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== AHA-Soft Product: IconLover - Software (Windows) 5.42 and 5.45 Exploitation Technique: ======================= Local Severity Level: =============== High Technical Details & Description: ================================ A stack buffer overflow vulnerability has been discovered in the official in the IconLover v5.4.2 and v5.4.5 software. The local vulnerability allows to overwrite the registers of the software process to compromise the target system. The vulnerability is located in the `File -> New Icon Lybrary` and `Lybrary -> Download` module. Local attackers are able to include a malicious unicode payload as `URL` (input) to crash the software via stack buffer overflow vulnerability. Local attackers are able to takeover the system process by escalate of privileges to compromise the local target system. The security risk of the stack buffer overflow vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 7.1. Exploitation of the vulnerability requires a low privilege system user account and no user interaction. Successful exploitation of the local vulnerability results in system compromise by elevation of privileges via overwrite of the registers. Vulnerable Module(s): [+] File -> New Icon Lybrary > Lybrary -> Download Vulnerable Input(s): [+] Website Adress (URL) Proof of Concept (PoC): ======================= The local buffer overflow software vulnerability can be exploited by local attackers with low privilege system user accounts and without user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. Manual steps to reproduce the vulnerability ... 1. Copy a large unicode AAAA+... string from bof.txt to your clipboard 2. Run the IconLover.exe software 3. Click the File -> New Icon Lybrary option 4. Click the Lybrary and push the Download button 5. Paste it the input Website Adress (URL) AAAA+... string click ok and hide 6. Software will crash via stack buffer overflow. Now the attacker can overwrite the registers 7. Successful reproduce of the vulnerability!

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