Sony PC Companion 2.1 (CheckCompatibility()) Stack-based Unicode Buffer Overload Vendor: Sony Mobile Communications AB Product web page: http://www.sonymobile.com Affected version: 2.10.115 (Production 27.1, Build 830) 2.10.108 (Production 26.1, Build 818) Summary: PC Companion is a computer application that acts as a portal to Sony Xperia and operator features and applications, such as phone software updates, management of contacts and calendar, media management with Media Go, and a backup and restore feature for your phone content. Desc: The vulnerability is caused due to a boundary error in PimData.dll when handling the value assigned to the 'OrgHeartBeat' item in the CheckCompatibility function and can be exploited to cause a stack-based buffer overflow via an overly long string which may lead to execution of arbitrary code on the affected machine. ------------------------------------------------------------------------------ STATUS_STACK_BUFFER_OVERRUN encountered (1214.1688): Break instruction exception - code 80000003 (first chance) eax=00000000 ebx=5fcf2b80 ecx=75b1de28 edx=0012e12d esi=00000000 edi=001f9ec4 eip=75b1dca5 esp=0012e374 ebp=0012e3f0 iopl=0 nv up ei pl zr na pe nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246 KERNEL32!FormatMessageA+0x13c85: 75b1dca5 cc int 3 0:000> d edi 001f9ec4 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 001f9ed4 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 001f9ee4 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 001f9ef4 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 001f9f04 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 001f9f14 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 001f9f24 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 001f9f34 41 00 41 00 41 00 41 00-41 00 41 00 41 00 41 00 A.A.A.A.A.A.A.A. 0:000> ------------------------------------------------------------------------------ Tested on: Microsoft Windows 7 Ultimate SP1 (EN) 32bit Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2012-5119 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5119.php http://cwe.mitre.org/data/definitions/121.html 09.11.2012 ---